3 seasons available

Sonic X

TVY7 • Anime, Animation, International, Kids, Adventure • TV Series • 2003

During a mission on Mobius to rescue Cream the Rabbit and Cheese the Chao from Dr. Eggman's headquarters, Sonic and his friends are caught in an explo...more

During a mission on Mobius to rescue Cream the Rabbit and Cheese the Chao from Dr. Eggman's headquarters, Sonic and his friends are caught in an explo...more

Start watching Sonic X

Stream thousands of shows and movies, with plans starting at $5.99/month for 1 year*.

3 seasons available (156 episodes)

3 seasons available

(156 episodes)

Season123
Episode 53

(Dub) A Cosmic Call

Sonic returns to his planet after releasing the seven chaos emeralds into space. Sonic's friends are watching the skies for a meteor shower but get a surprise when an Alien named Cosmo crashes her spaceship right before their eyes! As she is recovering, a Metarex lands on Earth, destroying everything in its path in search for the Planet Egg. Sonic, Knuckles, and Tails battle the Metarex, but can't stop him from escaping into space. As Cosmo introduces herself to Sonic, an old friend makes a suprise appearance.
Episode 53

(Sub) A Messenger from a Meteor Shower

In Cream's house, after introducing themselves, everyone is surprised by the arriving Metarex who starts destroying the forest with laser beams. The last Metarex was able to finish his duty: which was to remove the "planet egg". Cosmo explains that the planet egg "is the lifeforce that sustains their world". Sonic, Tails, and Knuckles make a last effort to save the Planet Egg, but the Meterex escapes. Cosmo then tells Sonic that he is the final hope to save the galaxy. At the same moment, Chris (who is now 18) completes his new machine that will transport him to Sonic's world. It works, but Chris arrives in his 12-year-old body. The reason this happens is because 1 year on Chris' world is only 1 month on Sonic's meaning that it's only been 6 months since Sonic and Chris last saw each other.
Episode 54

(Dub) Cosmic Crisis

Chris has made it to Sonic's world, but the strange time lapse has turned him into a kid again. As Sonic recovers from his battle, Cosmo reveals the mission of the Metarex: to steal every world's Planet Egg, the heart of each planet that sustains life. Using Tail's Blue Typhoon Ship, powered by the Master Emerald, Sonic and friends prepare to foil this evil plan. But when a new Metarex comes to interfere with their goal, it's up to Sonic and Knuckles to keep it at bay. As the Blue Typhoon launches into space, Sonic destroys the Metarex in a giant blast! Sonic and his friends are on their way, but the quest to save the Universe has only just begun.
Episode 54

(Sub) The Spaceship Blue Typhoon

Cosmo explains the Metarex goals and the consequences of the planet egg's removal. Cosmo also admits that she's the only survivor from her group, which was eliminated by the Metarex. Knuckles doesn't trust Cosmo. Everybody (except for Knuckles, who's suspicious of her) agrees that the Metarex must be stopped and they decide to go into space to destroy the Metarex and to find the lost Chaos Emeralds. Luckily for them, Tails has just finished to build his new invention: a big flying fortress called the Blue Typhoon. Unfortunately, his new ship used to be powered by the Chaos Emeralds. Chris thinks that they could use the Master Emerald. Knuckles initially disagrees, but with some female persuasion, he finally agrees. At the same time, another Metarex is sent to the planet in order to destroy Sonic and the Blue Typhoon. A fight engages between the Metarex and Sonic and Knuckles. With the help of the Typhoon's primary weapon, the "Sonic Power Cannon" ("Sonic Driver" in the original Japanese version), the Metarex is destroyed. The Blue Typhoon takes off, but it is followed by Dr. Eggman and Rouge.
Episode 55

(Dub) H2 Whoa

As Sonic and the others find one of the Chaos Emeralds, Chris's friends and family discover that he's gone. Using submarines, the gang travels deep into a waterlogged planet only to land on an island inhabited by Metarex. When Sonic is captured by these metal meddlers, Amy devises a plan to save Sonic, but she'll have to hurry before Sonic becomes shark bait!
Episode 55

(Sub) The Water Planet Hydo

The Blue Typhoon is now on its way to a new adventure. Knuckles thinks that a Chaos emerald is nearby due to the Master Emerald's reactions. A planet is located and according to Sonic's guidebook, this is a dry planet. However, they find out that it's covered by water. Accidentally separated of the others, Chris & Sonic arrive to a Metarex base, where several Metarex await them. The fight is engaged, but Chris, wanting to help his friend, is unable to punch a Metarex without hurting himself. Eventually, Sonic is captured and Chris is able to escape.
(Dub) An Enemy in Need
Episode 56

(Dub) An Enemy in Need

Sonic and the others see through Eggman's trick.
Episode 56

(Sub) Dr. Eggman Appears!

After saving the planet in the former episode, Sonic and his friends are thanked in a feast. Dr. Eggman is watching the scene and he thinks about his next scheme to take away the Chaos emerald. Bokkun suggests a plan to Eggman, but the evil doctor doesn't notice that it has been elaborated by Rouge, who made her way to the Egg Carrier. Eggman soon finds Knuckles and he tries to persuade him that he didn't want to be a bad person anymore, and he wishes to leave the planet by using a Chaos Emerald. Knuckles believes him and he finds the others in order to take the Emerald they just found and to give it to Eggman. Sonic disagrees and both of them engage in a fight. Taking advantage of the situation, Eggman almost takes the Emerald, but he is stopped by Amy and the others. This gives a Chance for Rouge to steal the Chaos Emerald, But at the same moment, a frog-shaped Metarex rises from the ground and it grabs the Emerald. Eggman let Cosmo go and he engages a fight against the Metarex. However, Eggman is defeated. It's Sonic's turn to fight the Metarex and, with the help of the Sonic Power Cannon and a Chris' trick, the blue hedgehog is victorious. The episode ends as Knuckles apologizes for being fooled by Eggman.
Episode 57

(Dub) A Chilling Discovery

Having found the first of the seven Chaos Emeralds, Sonic and friends are back on the hunt, detecting a second emerald on Planet Breezy. But Eggman is still hot on their trail. As our heroes face yet another Metarex in a battle to save the planet, Rouge has a plan of her own to steal the precious jewel.
Episode 57

(Sub) The Battle of Ice Palace

With the help of Chris' new program, the Blue Typhoon spots a Chaos Emerald on planet Freezy. The Blue Typhoon approaches planet Freezy, but it's attacked by a Metarex and it crashes on the planet. Sonic, Chris, Knuckles and Cosmo decide to go get the Chaos Emerald with the X-Tornado because Blue Typhoon is damaged. Rouge is also on her way for getting the emerald before Sonic. Everybody has to fight Metarex before reaching an ice palace, where the emerald is supposed to be located. Sonic's group find it, but it's sealed in a solid ice block. A more powerful Metarex appears and gets power from the emerald to become even stronger. A fight engages and Cosmo finds the way to defeat it with a laser beam. The laser from Blue Typhoon defeats Metarex. Planet Egg gets trashed into planet and the snow disappears. Knuckles finds the Chaos Emerald but before he gets it, Rouge steals it. However, Tails discovers that the emerald was a fake one.
Episode 58

(Dub) Desperately Seeking Sonic

When Sonic and the gang encounter two Metarex making a getaway with a Planet Egg, they use the Power Cannon to thwart their plans. Unfortunately, Sonic is launched too far, and is hurled onto a nearby planet. When he recovers from his fall he finds an unconcious Eggman nearby, with a chaos emerald laying by his feet! As the gang searches for Sonic and the planet egg, Amy, Cream, Cheese, and Cosmo are captured by a small Metarex, but not for long! They escape, but when Eggmen steals back the Chaos Emerald, it's Chris and Sonic to the rescue.
Episode 58

(Sub) The Girls' Jungle Trap

The Blue Typhoon detects two Metarex who just stole a Planet Egg on a jungle planet. Sonic destroys the biggest Metarex with the Power Cannon, but he is launched too hardly and he falls straight to the planet. He crashes on Dr. Eggman, who is already on the planet, and he takes the Green Chaos Emerald that the evil doctor has just discovered. Having landed on the planet, Tails and Knuckles get aboard the X-Tornado in order to find Sonic, leaving Amy behind. Amy desperately wants to find Sonic by herself and she enters into the jungle. She is accompanied by Cosmo, who wants to find the Planet Egg, and Cream and Cheese, who don't want to be left alone. Inside the jungle, Amy, Cosmo, Cream and Cheese struggle to find Sonic and the Planet Egg, but they are captured twice by the small Metarex who survived the previous fight. However, they escape and are able to take possession of the Planet Egg. Sonic is still running in the jungle with the Chaos Emerald in his hand and he is found by Tails and Knuckles. Dr. Eggman arrives and he steals the emerald from Sonic. Sonic and Knuckles prepare to fight, but the girl group and the Metarex appear. Eggman captures everybody (even the Metarex). The Planet Egg begins reacting and huge creepers wraps everyone. Sonic is able to free himself and with a little help from Tails and Chris, he defeats Eggman.
Episode 59

(Dub) Galactic Gumshoes

Chris's parents use their son's transporter to send his belongings to Sonic's world. Cream's mother asks Vector and his gang to track down Chris and deliver his stuff. Vector is happy to oblige, but when they reach the Blue Typhoon, instead of being welcomed, they are attacked! Tails and the others have mistaken them for Metarex. Once they realize their error, the crew of the Blue Typhoon invite Vector and his cohorts onboard. It's not long, though, before Vector gets over-zealous and decides to take Cream back to her mother, without even asking her! But Cosmo and the others aren't about to let that happen.
Episode 59

(Sub) Chaotix Go Into Space

Chris' grandfather, Chuck, finds a way to teleport material objects to Sonic's world. The stuff is discovered by Vanilla and she asks the Chaotix Detective Agency to deliver it to Chris. She's also worried about her daughter Cream and she asks them to check on her. Vector accepts, but Espio tells him that they don't have any space ship. However, Chuck also sends a space ship to Sonic's planet and the Chaotix are on their way. Aboard the Blue Typhoon, Sonic and Knuckles are playing chess. Knuckles takes time before moving a piece, and Sonic decides to take a quick walk outside the ship. Accidentally, Sonic slips from the ship and drifts into outer space, and Knuckles leaves the Typhoon to recover him. Inside the ship, Tails points out that another ship is approaching and everyone is convicted that it is a Metarex ship. The Chaotix are beaten up one by one when they try to get in. Afterwards, they flee, but Tails pursues them in the X-Tornado. He discovers a little house on the ship and realizes it is not an enemy ship.
Episode 60

(Dub) Trick Sand

Rouge is about to swipe one of Eggman's emeralds when she comes across a secret stowaway: Shadow! The crew of the Blue Typhoon go emerald hunting on a deserted planet where things get spooky: Sonic, Amy and Knuckles explore a creepy castle, while Chris and Cosmo discover a foreboding warning left behind by the planet's vanquished former inhabitants. When the entire castle turns into quicksand and swallows up Sonic, a fierce battle ensues, pitting our heroes against a new kind of powerful Metarex. Just when all appears lost Sonic and company get a blast from the past-- as Shadow the Hedgehog suddenly comes to their rescue. Before they can thank him however, he snatches up their Chaos Emerald and vanishes!
Episode 60

(Sub) Shadow's Rebirth

Rouge discovers that Shadow is currently hibernating inside a capsule on Eggman's ship. The Blue Typhoon follows the Chaos Emerald's signal to a dark, abandoned planet. Sonic, Amy and Knuckles search inside an old castle, while Chris and Cosmo look inside an ancient colony. Sonic's group quickly notices that the castle is a trap. In fact, it's an illusion created by a Metarex. Chris, who's in the Hyper Tornado, saves Sonic's group from the Metarex's clutches. This Metarex suddenly turns the castle into a sandtrap. Sonic tries to counter-attack, but instead is electrified by the boss Metarex. Chris tries to save Sonic, but the Hyper Tornado gets damaged by the attack. At the same moment, in the Egg Carrier, Shadow awakens and he teleports himself to the fight place. He easily defeats the Metarex, saves Chris, and he shows his presence to everybody. He disappears with the Purple and Red Chaos Emeralds.
Episode 61

(Dub) Ship of Doom

Scar Ship, a fearsome Metarex battleship capable of demolishing entire fleets of resistance fighters, is called upon by Dark Oak. Its new mission: destroy Sonic the Hedgehog and Dr. Eggman. Scar Ship begins by launching a suprise attack on Eggman's ship. Despite Shadow's best efforts, it appears all hope is lost for Eggman and his crew. Rouge manages to escape, and soon informs Sonic and the gang of what has happened. Cosmo recognizes the ship: it is the same one that destroyed her family and friends! The gang decides to take on the ship in a battle royale! But it will take some cunning trickery, and some unexpected help, to take it down!
Episode 61

(Sub) The Metarex Battleship Invades!

The show opens with a fight involving a huge Metarex named Scarship and an armada of smaller ships. Scarship destroys every ship and he's assigned to a new mission: to destroy Sonic and Dr. Eggman. Aboard the Crimson Egg, Dr. Eggman finds out that Scarship is approaching and the battle engages. Eggman sends Shadow to destroy Scarship, but Shadow is unable to do the job. Rouge flees from the Crimson Egg, just before Starship sends a missile and seems to have destroyed it. Rouge informs the Blue Typhoon's crew of the situation and sends them images from the battle. Cosmo recognizes Scarship, it's the Metarex who destroyed her group's ship. Scarship decide to destroy the Blue Typhoon by crashing into it. The Typhoon won't be able to get out of its way in time, but Shadow appears from nowhere and takes Scarship away. It appears that Eggman was able to escape from Scarship. However, Scarship won't ever surrender and it's about to self-destroy. Shadow is able to freeze time around it and Sonic defeats it with the Power Cannon.
Episode 62

(Dub) An Underground Odyssey

Sonic and the gang go exploring another deserted 'ex-planet,' looking for emeralds. When Cosmo and Tails enter a canyon cave, Cosmo accidentally presses a hidden button that causes them to plunge into a huge underground cavern. The two spot some weird fireflies which they follow to a huge Metarex fortress! Once inside they discover a chaos emerald factory which uses a real emerald to create fake ones. But when they're spotted by the Metarex, they grab the emerald and run! Just when they think they're safe, the Metarex catch up with them and all seems lost. Luckily, at the same moment Sonic and the rest of the gang show up and help them defeat the Metarex and make their escape.
Episode 62

(Sub) Secret of the Underground Canyon

The show opens with a sequence inside Cosmo's ship and ends when Scarship destroys it, leaving Cosmo alone. Then, the Blue Typhoon's crew find themselves on a new planet. It seems that there's a Chaos Emerald nearby. Tails, Knuckles and Cosmo follow the emerald's track to an abandoned city. Knuckles discovers a deep gorge. Lower, there's a cave. Tails and Cosmo enter, but Cosmo accidentally pushes a button which launches an avalanche and seals them inside the cave. Tails still receives the emerald's signal and he and Cosmo pursue their searches. Inside the cave, Tails and Cosmo discover a big factory full of Metarex. They enter unnoticed and they find the Chaos Emerald inside a manufacturing plant of fake emeralds. They are found out by the Metarex, but they are able to escape with the White Chaos Emerald.
Episode 63

(Dub) Station Break-In

Both Eggman and Sonic's gang have located the last two chaos emeralds. Unfotunately, they are onboard a heavily guarded Metarex space fortress. Eggman proposes a little teamwork: Members from each group will enter the fortress and disarm the security system. After that, it's a race for the prize, finders keepers! Sonic and the gang agree, and Chris joins Shadow and Rouge on a mission to disarm the alarm. They're successful and both teams set off for the emeralds. Sonic's gang easily takes the lead, but Eggman has some dirty tricks up his sleeve. When they finally reach the emeralds, they find the Metarex are using them for their evil plans. Before they know it, our heroes come face to face with Dark Oak himself, the ruler of all the Metarex!
Episode 63

(Sub) Fort in Space: Metal Planet

Dr. Eggman discovers that the last two Chaos Emeralds (Cyan and Yellow) are located inside a huge Metarex fortress. The Crimson Egg and the Blue Typhoon arrive on location at the same moment. Eggman suggests Sonic to put their efforts together in order to enter inside the fortress. His plan: a little group will enter first and disconnect the fortress' security system, so the other ones could penetrate. Eggman sends Shadow and Rouge while Chris volunteers to accompany them. They enter with the help of Chaos Control. Chris finds the control room and they succeed in their job. Sonic & Knuckles penetrate in the fortress aboard the X-Tornado, Amy & Cosmo follow them and Eggman, Bocoe & Decoe are right behind. Sonic finds the emeralds. The only thing: he is welcomed by an entire army of Metarex, led by Dark Oak, the Metarex leader, and the battle is about to begin.
Episode 64

(Dub) A Metarex Melee

Sonic squares off with Dark Oak and his army of Metarex. Meanwhile Tails reports that the Blue Typhoon has been surrounded by Metarex battleships. Cosmo uses the code she deciphered to swipe the Metarex's emeralds and release the Planet Egg. When the Metarex realize what has happened they open fire on their own fortress, hoping to destroy Sonic and the others along with it. Chris is able to nab Eggman's emeralds, so all seven are now together again. Sonic and Shadow proceed to have a Super Showdown.
Episode 64

(Sub) Clash! Sonic Vs. Shadow

The fight between Sonic and Dark Oak starts. Sonic directly attacks Dark Oak, but he instantly disappears: it was a hologram. Outside the fortress, a Metarex armada, led by Red Pine, is approaching. Surprisingly, the Red Pine army begins to attack their own fortress, while there still are Metarex inside. Shadow, Rouge and Chris are transported, via Chaos Control, inside the Egg Carrier. Chris finds a way to steal the emeralds found by Eggman and flees away by using one of Eggman's mini-ships. Shadow follows him and he stops him. Rouge grabs him and she wants Chaos Emeralds. Chris disagrees and Rouge drops him. Chris falls to his doom, but he's rescued by Knuckles, who's having a trouble in piloting X-Tornado. Chris and Knuckles, followed by Shadow and Rouge go to save Sonic, Amy and Cosmo. The seven Chaos Emeralds are put together, transforming Sonic and Shadow into their super forms. Super Sonic and Super Shadow engage into a fight inside the fortress. At the same moment, a gravitational field is activated inside the fortress and it starts to destroy itself from the inside. The Metarex armada is destroyed, Super Shadow sees the Crimson Egg fly down to the center of the gravity field and jumps in and brings it back to space via Chaos Control, while the Blue Typhoon escapes with the power of the Master Emerald.
Episode 65

(Dub) Mission: Match up

Chris spots an unidentified spacecraft and sounds the alarm, but it's only Vector and his gang. They've been lost in space since delivering Chris's things and now they need Tails' help to repair their ship. Vector agrees not to cause any trouble, but old habits die hard and he comes up with a scheme to play match maker for Cosmo and Tails. As Cosmo plans a surprise party for Sonic and the others, Vector tries to force a love connection.
Episode 65

Chaotix' Electric Shock Love Tactics

The Blue Typhoon encounters the Chaotix ship. Vector notices the growing relationship between Tails and Cosmo. In order to thank Tails for fixing his ship, Vector decides to help him winning Cosmo's heart. At the same time, Tails unintentionally discovers Cosmo's surprise: she plans to throw a party on the ship. After finishing the preparations, the Chaotix go get everybody to the party room when they cross Knuckles' path. Knuckles was used against his will in one of Vector's plans and he decides to take his revenge. They end up in the party room and they ruin everything. Arriving on the scene, Tails and Cosmo are disappointed, but Sonic says it's no problem and that they'll put everything back. He also thanks Cosmo for her party idea. Tails tries to tell Cosmo how he feels, but is too embarrassed, and the episode ends with Cosmo and Tails watching the stars outside in space.
Episode 66

(Dub) Clash in the Cloister

The brave crew of the Blue Typhoon steer the ship directly into a gravity pool in order to reach an intergalactic cloister. Once inside the ship immediately gets caught up in vines, giving Yellow Zelkova a chance to find them and attack. As the fight ensues, Sonic realizes that they will never match this Metarex's brawn, but they can beat it using their speed.
Episode 66

(Sub) Crossing the Galaxy Corridor!

The Blue Typhoon is pulled into the Intergalactic Cloister, a strange region of space. Eager to do battle, Metarex Commander Yellow Zelkova launches an attack on the Blue Typhoon. Sonic and Knuckles team up to fight him, finding that Zelkova is too powerful for them. However, they then trick him into freeing the Blue Typhoon from a formation of space stalactites, and put him in line with the Sonic Driver cannon. They fire, and Zelkova is thrown back, but not destroyed. They then escape as he swears vengeance.
Episode 67

(Dub) Testing Time

Sonic and the gang realize the Metarex are leading them somewhere, but decide to go along anyway. Soon they find themselves at Black Narcissus's base, located on a planet recently destroyed by the evil Metarex. The base is a fake emerald factory. Black Narcissus lures Cosmo and Chris into his base by promising information about Cosmo's ancestors and the Metarex. But it's just another dirty trick, and as soon as they arrive Black Narcissus takes them prisoner. Now it's up to Sonic to save the day. But in order to rescue his friends he must first battle two robots created by Black Narcissus to test his abilities.
Episode 67

(Sub) The Black Trap

Sonic and friends come across a barren planet with 500 Chaos Emerald signals coming from it. Black Narcissus is inside, and sends a message to the Typhoon, a message that only Cosmo can understand. He then sets off fireworks, allowing Cosmo to escape to the planet undetected. Unexpectedly, Chris follows, but Narcissus captures both him and Cosmo. When Chris tries to escape with Cosmo, Chris is attacked and stabbed (knocked out in the English version) by Black Narcissus. Meanwhile, Sonic discovers their disappearance and comes to rescue them, and upon seeing Chris injured and Cosmo terrified, explodes in rage and becomes a darker and more violent version of Super Sonic thanks to the Metarex's fake Chaos Emeralds, dubbed Dark Super Sonic. Dark Super Sonic then proceeds to destroy two Metarex robots Narcissus had prepared just for him for an "experiment". Suddenly, Eggman appears and has Decoe and Bocoe hold Narcissus down while Bokkun kicks him, dealing some damage. Chris and Cosmo are saved by Shadow while Rouge destroys the machine that makes the fake Chaos Emeralds. Sonic returns to normal. Sonic, Chris and Cosmo are reunited with the others and Eggman asks Black Narcissus he can't go to Metarex team as The Blue Typhoon leaves the planet.
Episode 68

(Dub) A Revolutionary Tale

Eggman and his crew encounter a space battle between the Metarex and a band of rebel fighters. Shadow fights alongside the rebels and they are able to force the Metarex to retreat. Thankful for the help, the rebels agree to give Eggman their Chaos Emerald. But all is not as it seems. Leon sends Molly, along with Shadow and Rouge, to retrieve the Emerald, but it's a trap. Leon and his fellow soldiers have decided to make a deal with the Metarex, but they know Molly will never go along with it. So they have set up a bomb to destroy her! Meanwhile, they plan to hand over Eggman to the Metarex, so that they might be spared. But Shadow saves Molly and Rouge from the bomb, and Eggman catches wind of Leon's plot to betray him.
Episode 68

(Sub) Above a Destroyed Planet

While traveling through space, Dr. Eggman and his forces come across a group of humans battling the armada of Pale Bay Leaf. The two groups talk, and Shadow and Rouge get to know a human girl named Molly. After seeing Shadow in battle, Molly comes to believe that Shadow is a hero of folklore named Black Wind. Shadow, Rouge and Molly infiltrate an old factory where they find the White Chaos Emerald. Eggman is then taken prisoner by the humans, revealing that they have made a deal with the Metarex. A battle erupts. In the Japanese version, Molly is killed by Pale Bay Leaf's lasers, while in the English dub, Molly flies away saying she will return and continue fighting. At the end of it all, Shadow and Rouge look out into a sunset in front of Molly's grave(Japanese version)and Shadow gives the Chaos Emerald to Rouge, showing he finally trusts her with an Emerald and tells her to give it to Eggman while he walks away. Despite the damage, Pale Bay Leaf survives, and communicates with Dr. Eggman.
Episode 69

(Dub) The Planet of Misfortune

The ship's scanner has located an Emerald inside what seems to be a stray asteroid. But this 'asteroid' turns out to be a spaceship, piloted by strange creatures from a dying planet called Marmolin. Unfortunately, despite pleas from our heroes, these space travelers refuse to part with their emerald. Sonic and his friends are able to win them over, however, by giving them a ride home and investigating what is making the planet sick. But Marmolin is no ordinary planet. It's filled with magic, spells and fortunes. Amy is eager to try out a powerful love spell on Sonic. Chris traces the planet's problems to an underground disease located where the Planet Egg was. By blasting Sonic into the ground they are able to destroy the disease, and heal the planet. Afterwards, Tails and Cosmo accidentally set off a love trap that was set by Amy for Sonic. Amy cannot contain her frustration as a new love between Tails and Cosmo blooms.
Episode 69

(Sub) Please, Marmolin!

In this episode, Sonic and the others find a meteor in space while searching for the Chaos Emeralds. Tails pulls it in, and they find it to actually be a space ship. Inside, small chao-like creatures called Marmolians are discovered and it is revealed that they have the Green/Cyan Chaos Emerald. The Marmolians and Sonic go back to their home planet, the Planet Marmolim, and Sonic destroys a diseased part of the planet that encased the Planet Egg. Amy thinks they have magic on the planet, so she tries to put a love spell on Sonic. However, it ends up backfiring, and instead works on Tails and Cosmo at the end of the episode, leading to the two embracing while watching the moon. This episode basically confirms Tails and Cosmo's relationship, much to the dismay of Amy.
Episode 70

(Dub) Terror On the Typhoon

While traveling in the Galactic Cloister, the Blue Typhoon comes under attack from the Metarex fleet, led by the three surviving commanders and Dr. Eggman. Sonic attempts to attack from the Sonic Driver, but Dr. Eggman deploys a shield that not only repulses Sonic's attack, but causes an overload explosion that puts Knuckles out of commission. With Sonic and Knuckles both out cold, Tails assumes command reluctantly until Cosmo boosts his confidence. Coming up with a plan, Tails pilots the Blue Typhoon towards a black hole in the Cloister. Sonic and Knuckles recover long enough to deploy the Sonic Driver, reversing the black hole and allowing the Blue Typhoon to escape. Visiting the medical bay, Tails is praised by the injured Sonic and Knuckles.
Episode 70

(Sub) The Eggman Armada Appears!

While traveling in the Galactic Cloister, the Blue Typhoon comes under attack from the Metarex fleet, led by the three surviving commanders and Dr. Eggman. Sonic attempts to attack from the Sonic Driver, but Dr. Eggman deploys a shield that not only repulses Sonic's attack, but causes an overload explosion that puts Knuckles out of commission. With Sonic and Knuckles both out cold, Tails assumes command reluctantly until Cosmo boosts her confidence. Coming up with a plan, Tails pilots the Blue Typhoon towards a black hole in the Cloister. Sonic and Knuckles recover long enough to deploy the Sonic Driver, reversing the black hole and allowing the Blue Typhoon to escape. Visiting the medical bay, Tails is praised by the injured Sonic and Knuckles.
Episode 71

(Dub) Hedgehog Hunt

Following their battle with the Metarex fleet, Sonic and the gang are stranded on an alien planet with the Chaotix, who are running a cafe to pay for parts to their own ship. Dr. Eggman arrives looking for Sonic and the others, while Pale Bay Leaf waits in orbit to shoot the Typhoon down. Helping out Sonic and the gang, the Chaotix provide parts for their ship. However, Dr. Eggman provides the real assistance when he disguises the Crimson Egg as the Blue Typhoon and takes the full force of the Metarex attack. Pale Bay Leaf moves off, and no ambush awaits the real Typhoon once it takes off.
Episode 71

(Sub) Café Chaotix

Following their battle with the Metarex fleet, Sonic and the gang are stranded on an alien planet with the Chaotix, who are running a cafe to pay for parts to their own ship. Dr. Eggman arrives looking for Sonic and the others, while Pale Bay Leaf waits in orbit to shoot the Typhoon down. Helping out Sonic and the gang, the Chaotix provide parts for their ship. However, Dr. Eggman provides the real assistance when he disguises the Crimson Egg as the Blue Typhoon and takes the full force of the Metarex attack. Pale Bay Leaf moves off, and no ambush awaits the real Typhoon once it takes off.
Episode 72

(Dub) Zelkova Strikes Back

The Blue Typhoon arrives at a planet, but Yellow Zelkova attacks the Blue Typhoon, equipped with a special energy shield built by Dr. Eggman. Sonic attempts to stop him, but is unable to break through the shield. Picking up where they left off, Zelkova and Knuckles get into a fierce battle, during which Knuckles smashes Zelkova's knee and breaks the spurs on one of his gloves. Using cable from the Blue Typhoon, Sonic and the others channel lightning to overload Zelkova's shield. Zelkova's mechanical outer body is destroyed, revealing his flesh form beneath. Zelkova attacks, but is knocked into a nearby lava pit by Knuckles. Pale Bay Leaf informs Eggman of Zelkova's demise, mocking the failure of his shield. Shadow and Rouge find a fake Chaos Emerald at the top of the tree, but they hear groaning from its base. They find Leon (from the Resistance in Episode 68) being consumed by the tree, saying that the Metarex betrayed them. He also gives Shadow a memory chip and says it's not too late to destroy the Metarex.
Episode 72

(Sub) The True Form of the Metarex!?

The Blue Typhoon arrives at a planet, but Yellow Zelkova attacks the Blue Typhoon, equipped with a special energy shield built by Dr. Eggman. Sonic attempts to stop him, but is unable to break through the shield. Picking up where they left off, Zelkova and Knuckles get into a fierce battle, during which Knuckles smashes Zelkova's knee and breaks the spurs on one of his gloves. Using cable from the Blue Typhoon, Sonic and the others channel lightning to overload Zelkova's shield. Zelkova's mechanical outer body is destroyed, revealing his flesh form beneath. Zelkova attacks, but is knocked into a nearby lava pit by Knuckles. Pale Bay Leaf informs Eggman of Zelkova's demise, mocking the failure of his shield. Shadow and Rouge find a fake Chaos Emerald at the top of the tree, but they hear groaning from its base. They find Leon (from the Resistance in Episode 68) being consumed by the tree, saying that the Metarex betrayed them. He also gives Shadow a memory chip and says it's not too late to destroy the Metarex.
Episode 73

(Dub) The Cosmo Conspiracy

Shadow invades the Blue Typhoon, trying to kill Cosmo for reasons (at the time) unknown. Tails runs away with Cosmo, with Shadow following them. Sonic, Chris, and Knuckles all try to hold Shadow off, but are all easily defeated. Tails and Cosmo try to escape via the X-Tornado, but they're attacked by Shadow. Shadow blows up the jet, but Tails flies himself and Cosmo out. Shadow's exit is blocked by the destroyed X-Tornado, but he soon manages to escape and chases Tails and Cosmo. Tails outsmarts him when they're at a dead end, and they send Shadow through the Sonic Power Cannon and he gets blasted to space. Shadow returns to Blue Typhoon with Chaos Control by using a fake Chaos Emerald. Tails attacks Shadow, determined to keep him from hurting Cosmo, but soon proves to be no match for him. Nonetheless, Tails continues his attack, but is badly injured in the process. The Metarex ship arrives and Dark Oak congratulates Cosmo for spying, and then calls her by her codename, White Seed. Cosmo, with no knowledge of what's happening, screams while her amulet is shining. The Blue Typhoon gets surrounded by light and disappears. Meanwhile, Knuckles bumps into Rouge and she explains everything.
Episode 73

(Sub) Shadow the Assassin!

Shadow invades the Blue Typhoon, trying to kill Cosmo for reasons unknown. Tails runs away with Cosmo, with Shadow following them. Sonic, Chris, and Knuckles all try to hold Shadow off, but are all easily defeated. Tails and Cosmo try to escape via the X-Tornado, but they're attacked by Shadow. Shadow blows up the jet, but Tails flies himself and Cosmo out. Shadow's exit is blocked by the destroyed X-Tornado, but he soon manages to escape and chases Tails and Cosmo. Tails outsmarts him when they're at a dead end, and they send Shadow through the Sonic Power Cannon and he gets blasted to space. Shadow returns to Blue Typhoon with Chaos Control by using a fake Chaos Emerald. Tails attacks Shadow, determined to keep him from hurting Cosmo, but soon proves to be no match for him. Nonetheless, Tails continues his attack, but is badly injured in the process. The Metarex ship arrives and Dark Oak congratulates Cosmo for spying, and then calls her by her codename, White Seed. Cosmo, with no knowledge of what's happening, screams while her amulet is shining. The Blue Typhoon gets surrounded by light and disappears. Meanwhile, Knuckles bumps into Rouge and she explains everything.
Episode 74

(Dub) Eye Spy

Everyone is surprised after they land on a deserted planet. Cosmo is knocked out while the team discover that Cosmo's brain is emitting a signal to the Metarex, they plan on trying to eliminate the signal, except that the signal is connected to the part of her brain that translates sounds and sight; thus, Cosmo will most likely lose her eyesight and hearing if the chip is removed. While Tails and Chris are torn about this, Knuckles pushes for the surgery. Meanwhile, Amy starts searching for Sonic (as always), but ends up bumping into Rouge. They both discover that this planet is not only Cosmo's homeworld, but the Metarex's as well. They also discover that Cosmo's people were able to transform into huge dinosaur-like beings to protect their planet from an alien invasion. However, a few of them wanted to be able to completely destroy the alien horde, and so crystallized the Planet Egg in order to keep the transformation from sapping their energy. They eventually led to the abandonment of the planet. Cosmo, horrified by the fact that the Metarex are using her to spy on them, intends to leave, but Tails reassures her that they all will help her defeat the Metarex. Sonic and the rest of the gang also support the new resolution, and they all are ready for an attack on the Metarex, maybe the last attack. Shadow is angered by this and tries to leave. Chris tries to tell him that he needs to help them, yet he keeps refusing, but then Bokkun arrives, telling Shadow that Eggman has been captured by the Metarex.
Episode 74

(Sub) The Lost Planet

Everyone is surprised after they land on a deserted planet. Cosmo is knocked out while the team discover that Cosmo's brain is emitting a signal to the Metarex, they plan on trying to eliminate the signal, except that the signal is connected to the part of her brain that translates sounds and sight; thus, Cosmo will most likely lose her eyesight and hearing if the chip is removed. While Tails and Chris are torn about this, Knuckles pushes for the surgery. Meanwhile, Amy starts searching for Sonic (as always), but ends up bumping into Rouge. They both discover that this planet is not only Cosmo's homeworld, but the Metarex's as well. They also discover that Cosmo's people were able to transform into huge dinosaur-like beings to protect their planet from an alien invasion. However, a few of them wanted to be able to completely destroy the alien horde, and so crystallized the Planet Egg in order to keep the transformation from sapping their energy. They eventually led to the abandonment of the planet. Cosmo, horrified by the fact that the Metarex are using her to spy on them, intends to leave, but Tails reassures her that they all will help her defeat the Metarex. Sonic and the rest of the gang also support the new resolution, and they all are ready for an attack on the Metarex, maybe the last attack. Shadow is disgusted by this and tries to leave. Chris tries to tell him that he needs to help them, yet he keeps refusing, but then Bokkun arrives, telling Shadow that Eggman has been captured by the Metarex.
Episode 75

(Dub) Agent of Mischief

When Bokkun shows everyone Eggman's message (telling that the Metarex are starting to gather at galactic coordinates (0-0-0) because of a thousand-year prophecy), the gang starts lifting off to go beat the Metarex once and for all. Unfortunately, they leave Shadow behind. However, the Chaotix find Shadow and offer him a ride (for free, which is the surprising part) to galactic coordinates (0-0-0). Once Sonic and the gang reach (0-0-0), they find the Metarex fleet there, ready while a Planet Egg warps in from another universe. The Egg is in the center of a planet of water, which, combined with the light of the Chaos Emeralds, help Dark Oak and two other Metarex to mutate into a giant plant-dragon mix! Sonic's fleet starts attacking the planet, but then Sonic is catapulted into the air by a pillar of water. Dark Oak then swallows Sonic, who plunges face-first into the planet. Meanwhile, Chris infiltrates Dark Oak's ship to blow Eggman, Bocoe, and Decoe out. At the same time, Shadow and the Chaotix fight more Metarex, Shadow asking every Metarex he comes across where Dark Oak is. Eventually, the ship comes apart to reveal a giant tree, which attaches to the aquatic planet and starts growing to an unimaginable size.
Episode 75

(Sub) The Day of the Plantations

When Bokkun shows everyone Eggman's message, the gang starts lifting off to go beat the Metarex once and for all. Unfortunately, they leave Shadow behind. However, the Chaotix find Shadow and offer him a ride to galactic coordinates (0-0-0). Once Sonic and the gang reach (0-0-0), they find the Metarex fleet there, ready while a Planet Egg warps in from another universe. The Egg is in the center of a planet of water, which, combined with the light of the Chaos Emeralds, help Dark Oak, Black Narcissus and Pale Bayleaf to mutate into a giant plant-dragon mix! Sonic's fleet starts attacking the planet, but then Sonic is catapulted into the air by a pillar of water. Dark Oak then swallows Sonic, who plunges face-first into the planet. Meanwhile, Chris infiltrates Dark Oak's ship to blow Eggman, Bocoe, and Decoe out. At the same time, Shadow and the Chaotix fight more Metarex, Shadow asking every Metarex he comes across where Dark Oak is. Eventually, the ship comes apart to reveal a giant tree, which attaches to the aquatic planet and starts growing to an unimaginable size.
Episode 76

(Dub) The Light in the Darkness

Amy tries to rescue Sonic from the watery planet, but everyone else keeps her back, trying to come up with another plan. Then, Knuckles comes up with a brilliant idea: use the Master Emerald to cut off the energy supply to Dark Oak. The team charges up the Sonic Driver with the Master Emerald and fires it at Black Narcissus and Pale Bayleaf, destroying them. Unfortunately, after this is done, the Master Emerald shatters, and it is revealed that the Metarex have sucked up all the Chaos Emerald's energy. Dark Oak's beast head becomes extremely weak because of a hit from the Sonic Driver, and finally ceases movement. The planet expands, taking Dark Oak along with it. Inside the planet, Sonic sees what happens after the Forestation process is complete. He manages to fight a bunch of sand monsters and plant-like tentacles, only to find out he's fighting in a dream. Suddenly, Amy spots Sonic inside the planet is able to get Sonic out of there, crashing through the roots into the water to rescue him but is knocked unconscious. Sonic then catches Amy and stares at her in awe. However as Amy and Sonic are going down an energy sphere surrounds them, protects them and heals them. Chris (who's on Hyper Tornado) rescues Sonic and Amy. Suddenly, the planet condenses into a giant seed-like object.
Episode 76

(Sub) Battle! Dark Oak

Amy tries to rescue Sonic from the watery planet, but everyone else keeps her back, trying to come up with another plan. Then, Knuckles comes up with a brilliant idea: use the Master Emerald to cut off the energy supply to Dark Oak. The team charges up the Sonic Driver with the Master Emerald and fires it at Black Narcissus and Pale Bayleaf, destroying them. Unfortunately, after this is done, the Master Emerald shatters, and it is revealed that the Metarex have sucked up all the Chaos Emerald's energy. Dark Oak's beast head becomes extremely weak because of a hit from the Sonic Driver, and finally ceases movement. The planet expands, taking Dark Oak along with it. Inside the planet, Sonic sees what happens after the Forestation process is complete. He manages to fight a bunch of sand monsters and plant-like tentacles, only to find out he's fighting in a dream. Suddenly, Amy spots Sonic inside the planet is able to get Sonic out of there, crashing through the roots into the water to rescue him but is knocked unconscious. Sonic then catches Amy and stares at her in awe. However as Amy and Sonic are going down an energy sphere surrounds them, protects them and heals them. Chris (who's on Hyper Tornado) rescues Sonic and Amy. Suddenly, the planet condenses into a giant seed-like object.
Episode 77

(Dub) A Fearless Friend

When the giant seed finally reaches the final stage of its metamorphosis and starts sucking the life out of everyone except for Cosmo, she takes the Chaos Emeralds to Eggman, thinking that he'll know what to do. Unfortunately, Dark Oak attacks Cosmo, who drops the Chaos Emeralds into space. Thankfully, they close in on Sonic and Shadow, who use them to transform into Super Sonic and Super Shadow, and attack the Metarex seed. Cosmo feels helpless but her mother, in her mind, assures her that she is the one who will save the galaxy. She then transforms into a new form and becomes determined to stop this once and for all. She flies over to the planet, passes through the gravitational force that neither Super Sonic nor Super Shadow could pass through, and plants herself on top of it. She then becomes a tree, saying that she has now immobilized Dark Oak. She tells Tails to load and fire the Sonic Driver and shoot it at the planet. Everyone is shocked and does not know whether or not to risk saving the galaxy if they're going to kill Cosmo in the process. Tails, however, is very hesitant, but Cosmo re-assures him that her seeds will be spread throughout the galaxy. He then thinks back to all of the good times they've had and their love and, tearfully, admits that he loves her, and fires Super Sonic and Super Shadow at the planet, completely destroying it, including Cosmo.
Episode 77

(Sub) What I Can Do For You

When the giant seed finally reaches the final stage of its metamorphosis and starts sucking the life out of everyone except for Cosmo, she takes the Chaos Emeralds to Eggman, thinking that he'll know what to do. Unfortunately, Dark Oak attacks Cosmo, who drops the Chaos Emeralds into space. Thankfully, they close in on Sonic and Shadow, who use them to transform into Super Sonic and Super Shadow, and attack the Metarex seed. Cosmo feels helpless but her mother, in her mind, assures her that she is the one who will save the galaxy. She then transforms into a new form and becomes determined to stop this once and for all. She flies over to the planet, passes through the gravitational force that neither Super Sonic nor Super Shadow could pass through, and plants herself on top of it. She then becomes a tree, saying that she has now immobilized Dark Oak. She tells Tails to load and fire the Sonic Driver and shoot it at the planet. Everyone is shocked and does not know whether or not to risk saving the galaxy if they're going to kill Cosmo in the process. Tails, however, is very hesitant, but Cosmo re-assures him that her seeds will be spread throughout the galaxy (American and European dubs only). He then thinks back to all of the good times they've had and their love and, tearfully, admits that he loves her, and fires Super Sonic and Super Shadow at the planet, completely destroying it, including Cosmo.
Episode 78

(Dub) So Long Sonic

Shadow disappears again after losing Cosmo and saving the galaxy. Also, Sonic returns and gives Tails Cosmo's seed. Tails, who is extremely overcome with grief, completely loses his sanity over Cosmo's death. The Planet Eggs return to their homeworlds. Sonic, Eggman and their teams return to their homeworld as well. Chris and Knuckles try to rebuild Master Emerald to send Chris back home, but they fail, meaning Chris is stuck on Sonic's world forever. Chris is walking while looking for a place to build a house, but he bumps into Bokkun with a message to see Eggman. Chris finds Eggman and Chris sees the card that Bokkun gave him is a ticket home. Chris enters the rocket with 3 minutes to send Chris back or he will be stuck on Sonic's world forever. Chris flies away and thinks he isn't going to say goodbye to his friends, but he spots Sonic and they say goodbye. After the rocket disappears, Eggman decides to recreate Eggman Empire with Chris gone, though his true intentions are unknown.
Episode 78

(Sub) The Place where Planets are Born

Shadow disappears again after losing Cosmo and saving the galaxy. Also, Sonic returns and gives Tails Cosmo's seed. Tails, who is extremely overcome with grief, completely loses his sanity over Cosmo's death. The Planet Eggs return to their homeworlds. Sonic, Eggman and their teams return to their homeworld as well. Chris and Knuckles try to rebuild Master Emerald to send Chris back home, but they fail, meaning Chris is stuck on Sonic's world forever. Chris is walking while looking for a place to build a house, but he bumps into Bokkun with a message to see Eggman. Chris finds Eggman and Chris sees the card that Bokkun gave him is a ticket home. Chris enters the rocket with 3 minutes to send Chris back or he will be stuck on Sonic's world forever. Chris flies away and thinks he isn't going to say goodbye to his friends, but he spots Sonic and they say goodbye. After the rocket disappears, Eggman decides to recreate Eggman Empire with Chris gone.

Related

Monster Rancher
TVY7 • Anime, Animation • TV Series (1999)
Sonic Boom
TVY7 • Kids, Fantasy • TV Series (2014)
Yu-Gi-Oh! ZEXAL
TVG • Kids, Anime • TV Series (2011)
Ben 10 (2005)
TVY7 • Science Fiction, Fantasy • TV Series (2005)
Teenage Mutant Ninja Turtles
TVY7 • Fantasy, Animation • TV Series (2012)
Teen Titans Go!
TVPG • Superheroes, Animation • TV Series (2015)
Ben 10: Omniverse
TVY7 • Science Fiction, Fantasy • TV Series (2012)
The Amazing World of Gumball
TVY7 • Kids, Teen • TV Series (2011)
Rabbids Invasion
TVY7 • Kids, Adventure • TV Series (2013)

Select Your Plan

No hidden fees, equipment rentals, or installation appointments.

No Commercials

Get 1 month free, then

$11.99/

month

  • Stream on your favorite devices
  • Unlimited access to streaming content
  • Switch plans or cancel anytime
  • No Commercials
Available add-ons
  • HBO®
  • SHOWTIME®
  • CINEMAX®

Most Popular

Limited Commercials

Get 1 month free, then

$5.99/

month for 1 year*

  • Stream on your favorite devices
  • Unlimited access to streaming content
  • Switch plans or cancel anytime
Available add-ons
  • No Commercials
  • HBO®
  • SHOWTIME®
  • CINEMAX®

Hulu with Live TV

Get 7 days free, then

$39.99/

month

  • Watch Live TV on many of your favorite devices
  • Unlimited access to the Hulu streaming library (Limited Commercials Plan)
  • Stream 50+ top Live and On Demand TV channels
  • Switch plans or cancel anytime
Available add-ons
  • Enhanced Cloud DVR
  • Unlimited Screens
  • HBO®
  • SHOWTIME®
  • CINEMAX®