The BEST Episodes of Sonic X

Every episode ever - ranked by fan votes!

Last Updated: Feb 18, 2020

Network: TV Tokyo

A slight malfunction causes Chaos Control, and sends Sonic the Hedgehog to Earth. While there, Sonic meets Chris Thorndyke, who aids at collecting the Chaos Emeralds, so Sonic and friends can go home.

Showdown in Space

#1 - Showdown in Space

Season 2 - Episode 12 - Aired Dec 4, 2004

As the clock ticks for Space Colony Arc's crash, Sonic, Eggman, Bokkun, Dekkun, Knuckles, Tails, and Rouge try to get the Master Emerald to the power source, The Chaos emeralds. Meanwhile, Shadow is faced by Chris, who reminds him of Maria's Wish, to help Mankind. As Sonic, Knuckles and the two robots reach the power source, a recreated temple of Chaos, a robot/organic beast attacks the crew, thinking of a way past, Shadow offers to distract the beast long enough to stop the colony. Will they succeed? Watch and find out!

star 10.00
12 votes
Shadow Knows

#2 - Shadow Knows

Season 2 - Episode 8 - Aired Nov 6, 2004

After Shadow steals one of the Chaos Emeralds, Sonic is blamed for the crime and finds himself on the run from the law. As he does so, he runs into Shadow, and realizes why he's suddenly become a wanted criminal, because Sonic and Shadow look very much alike. As the two collide, Shadow reveals his ability to harness the power of the Chaos Emerald to use Chaos Control, which gives him an edge over Sonic.

star 9.69
16 votes
The Adventures of Knuckles and Hawk

#3 - The Adventures of Knuckles and Hawk

Season 1 - Episode 17 - Aired Jan 24, 2004

Knuckles has been traveling for days to reach a small town, to see his friend Hawk, and get another Chaos Emerald. They must prevent Rouge or The Fly Thief from getting it and Knux may even have to throw in some punches.

star 9.50
18 votes
Robotnik's Revenge

#4 - Robotnik's Revenge

Season 2 - Episode 11 - Aired Nov 27, 2004

Sonic, Tails, Knuckles, Amy and Tanaka have arrived at the ARK, but when Robotnik, Rouge and Shadow programme the ARK on a path to oblivion, it's Sonic The Hedgehog to the rescue in outer space!

star 9.50
14 votes
Sonic's Big Break

#5 - Sonic's Big Break

Season 2 - Episode 9 - Aired Nov 13, 2004

Under a new alliance, Shadow, Rouge, and Eggman carry out their latest plan. As Eggman launches an attack on Prison Island, Rouge breaks in to steal three Chaos Emeralds, and Shadow sneaks in to plant a bomb which will destroy the island. As Chris and Tanaka use a small boat to get to Prison Island, Tails and Amy arrive at the island in the X Tornado to rescue Sonic. When Amy accidently runs into Shadow, Eggman comes in to finish her off but Tails jumps in and fights with Eggman. Amy goes in and frees Sonic, who then finds Shadow. The two hedgehogs battle it out. However, problems arise. Rouge gets trapped in the compound, and Shadow, having another flashback of Maria, breaks away from the battle to go save her. When he gets there, Chris is there too, and pleads with Shadow because Sonic wound up taking the blame for his actions. With less than 10 seconds left before the bomb explodes, Shadow activates Chaos Control, enveloping Rouge and Chris in its energy. The bomb explodes, destroyi

star 9.45
11 votes
Shadow World

#6 - Shadow World

Season 2 - Episode 10 - Aired Nov 20, 2004

Sonic, Tails, Knuckles & Amy manage to break into Eggman's base, undetected. At least they THINK they've entered undetected. Bokkun finds them & calls on the Egg Golem! They board the space shuttle, but their adventure has just begun...

star 9.40
10 votes
Pure Chaos

#7 - Pure Chaos

Season 2 - Episode 1 - Aired Sep 18, 2004

What has happened? Two huge islands formed on the shores of Station Square, one of them being Angel Island, which is falling! Chaos Control apparently brought Sonic's world to Station Square, leaving Chris happy but Eggman to formulate a way to destroy the city. Next, Eggman is instructing his E-100 team to set out and destroy things. Even more terrible, Chaos is loose on Station Square streets reeking havoc! The beginning of the Sonic Adventure adaptation has begun!

star 9.33
9 votes
A New Start

#8 - A New Start

Season 2 - Episode 26 - Aired Mar 26, 2005

All the animals (except Sonic) are now back at their original world. Amy is having dinner with Cream and Cream's mom at their house, and Knuckles and Rouge are talking in the woods. Suddenly, Eggman hatches a plan, and Tails gets in his plane to stop him. Tails, is almost beaten, but luckily an old friend, Sonic, as Super Sonic, has finally returned, and pops in, saves him and beats Eggman. Meanwhile in Chris' world years have passed. Chris is now a adult. Suddenly he starts remembering all the fun, and the struggles he had with Sonic as a kid.

star 9.00
6 votes
The Cosmic Call

#9 - The Cosmic Call

Season 3 - Episode 1 - Aired Sep 10, 2005

In the episode's opening, Super Sonic is fighting against a mysterious robot. Super Sonic is unable to defeat him and he sends the Chaos Emeralds away to avoid his opponent to take them from him. Without the Emeralds, Sonic loses his energy and he falls to his planet. Another robot (a Metarex) follows him. Back on the planet, Tails, Amy, Cream & Cheese watch the sky and assist to a meteoric shower. However, a space ship crashes near them, carrying a strange alien girl named Cosmo. After introducing themselves, they are surprised by the arriving Metarex who starts destroying the forest with laser beams. Tails, accompanied by Cosmo, starts fighting it with the X-Tornado and he's soon joined by Knuckles. Sonic (who was rescued by Dr. Eggman) arrives but they can't beat the Metarex. 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.

star 8.75
8 votes
So Long Sonic

#10 - So Long Sonic

Season 3 - Episode 26 - Aired May 6, 2006

The episode starts off with Vanilla stopping by the Chaotix Detective Office to thank the Chaotix for all that they did for her and Cream. Amy and Cream then bring a whole bunch of snacks to Tails to try and cheer him up. (Note: This entire first part, almost four minutes long, was not shown in the English dub of the episode.) Chris then flashes back to the point just when the planet with Cosmo on it was being destroyed. Lucas is seen following Hertia to peace. Suddenly, the planet begins to expend all of its energy. Punching Sonic out of the way (which looked very painful for Sonic), Shadow uses the last of his energy to perform Chaos Control to stop time, giving everyone else a chance to escape. Eggman then worries that Shadow may not have survived the Chaos Control he did to save everyone, and he begins to feel some remorse for Shadow. Meanwhile, Sonic approaches Tails with only a seed from Cosmo. Tails, already upset about losing her, finally falls into Sonic's arms, crying as they fly away. Back on their homeworld, Chris and Knuckles have a little discussion about what's next for Chris, and they fall along the lines of where Chris's home would be now that he can't go back. Rouge is seen in Eggman's ship staring at Shadow's pod. After a run-in with Eggman, Rouge suspects that he knows something about Shadow's whereabouts. Eggman commented on Rouges breasts and was smacked, however this was cut out in the English dub. Near the end of the episode, Eggman shows Chris an egg-shaped pod that will take him home, but there's a catch: Chris only has three minutes to return home, or else he could be stuck in Sonic's world! Chris has no time to say goodbye to his friends, just as Eggman planned. Chris then leaves Sonic's universe via Eggman's pod. Once Chris is gone from sight, Eggman says that with Chris out of the way, he can continue in his creation of the Eggman Empire. Sonic's last words were "I won't forgive you, Eggman!" ("Life never stays slow around here

star 8.71
7 votes
How to Catch a Hedgehog

#11 - How to Catch a Hedgehog

Season 1 - Episode 24 - Aired Mar 13, 2004

Eggman comes in to the area disturbing the peace, but he's not match for blue. However, when Sonic is fighting, some sort of computer chip lands in Sonic's ear, causing him to pick his ears for the rest of the day (which Amy hates!). When a remote is pressed, Sonic goes berserk, and then begins to run fast and uncontrollably into the desert. The gang has to come up with ways to stop him, with the assist from Knuckles and Sam, but to their luck, they all fail, and Sam is no help either. What will they do?

star 8.67
6 votes
Mission: Match-Up

#12 - Mission: Match-Up

Season 3 - Episode 13 - Aired Dec 3, 2005

The Blue Typhoon encounters the Chaotix ship. Once aboard the Typhoon, Vector and Espio explain that they lost themselves in space and that their radio got broken. Tails agrees to fix their ship and he warns them that he doesn't want any trouble on the Typhoon. Tails begins his work when Cosmo brings him lunch. She reveals that she's planning a surprise for everybody. The Chaotix watch the scene and 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. Cosmo is disappointed because it won't be a surprise for Tails now, but the little fox tells her that she won't be able to prepare everything all by herself. Also on the scene, the Chaotix propose their help and Vector takes it as an opportunity to throw his match-up plans. However, they all fail one by one. Espio believes that their relationship should develop naturally. 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. Accidentally, 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. The episode ends with Cosmo and Tails watching the stars outside in space.

star 8.67
3 votes
The Beginning of the End

#13 - The Beginning of the End

Season 2 - Episode 23 - Aired Mar 12, 2005

It is discovered that Earth and Mobius are merging. If they join together completely, then time will stop forever. It is decided that Sonic and co. must return home through chaos control. This upsets Chris, who runs off to confront Eggman thinking it is one of his tricks to get rid of Sonic.

star 8.67
3 votes
Running Out of Time

#14 - Running Out of Time

Season 2 - Episode 24 - Aired Mar 19, 2005

This episode tells of what happens before Sonic & co. leave for home. Everyone is sad that they'll leave, especially Chris. There are many flashbacks to the first two episodes until they leave. Eggman, Cream, Amy, and Knuckles leave, but at the last second, Chris shuts the portal to Sonic's world, leaving Sonic trapped on Earth. So begins the (not so) long journey of Chris and Sonic...

star 8.67
3 votes
Cosmic Crisis

#15 - Cosmic Crisis

Season 3 - Episode 2 - Aired Sep 17, 2005

Chris arrives in Sonic's world as his 12-year-old self. He makes contact with everyone, but Sonic faints shortly after. Apparently, the recent battle tailed him off. Back to Cream's house, 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. 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 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 & 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.

star 8.67
3 votes
H2Whoa

#16 - H2Whoa

Season 3 - Episode 3 - Aired Sep 24, 2005

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. Informing Tails of the situation, Chris wants to rescue Sonic with the X-Tornado, but Tails insists that Chris won't be capable of his own. This leads Chris to question himself about his utility in their mission. Finally, Amy and Tails succeed to rescue Sonic with the X-Tornado, but Metarex attack the plane and by accident, Sonic falls straight toward the water. Chris arrives with another plane and saves Sonic with his own invention: hover shoes. The Metarex are finally defeated, the water retires from the planet and the Dark Blue Chaos Emerald is found.

star 8.67
3 votes
An Enemy In Need

#17 - An Enemy In Need

Season 3 - Episode 4 - Aired Oct 1, 2005

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 tired to be a bad person 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. Then, a giant robot controlled by Bocoe and Decoe appears suddendly and it captures Cosmo. Eggman summons Sonic to give him the Emerald and he would let Cosmo go away. 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.

star 8.67
3 votes
Little Chao Lost

#18 - Little Chao Lost

Season 1 - Episode 22 - Aired Feb 28, 2004

While exploring Tanaka's mountainous homeland, Cream and Cheese decide to take a swim. However Cheese is carelessly swept away down the river by a strong current, and the gang has to find him. When they reach the spot where they find Cheese, it's a beautiful, crisp lake inhabited by many chao that have been transported here as well. The gang begins to enjoy the company when unfortunately, Dr. Eggman is taking a hike too; and he plans to ruin the vacation!

star 8.63
8 votes
A Fearless Friend

#19 - A Fearless Friend

Season 3 - Episode 25 - Aired Apr 29, 2006

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. But, once they destroy it, they reveal an even smaller planet with a gravitational force that could potentially destroy the whole galaxy! 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, fires Super Sonic and Super Shadow at the planet, completely destroying it. Tails and Cosmo, during the ending sequence (which was cut from the English dub), say farwell to each other. At the very end as Cosmo floats off, she says "I love you."

star 8.57
7 votes
Beating Eggman - Part 2

#20 - Beating Eggman - Part 2

Season 1 - Episode 13 - Aired Nov 29, 2003

Rouge, Topaz, Knuckles, and the goverment break into Eggman's base and try to infilitrate it while Sonic and pals try to infilitrate it as well, and get the Chaos Emerald back. But Eggman has a huge suprise in store for Sonic...

star 8.54
13 votes
That's What Friends are For

#21 - That's What Friends are For

Season 1 - Episode 14 - Aired Dec 6, 2003

After destroying Eggman's base Sonic has become a huge celeberity and the President invites him and his friends to a party but Sonic has promised his new friend Helen that he'd take her to a mountain because her dad never did. Now the president is trying to catch Sonic and take him to the party and Sonic and Helen are on the run!!

star 8.54
13 votes
Emerald Anniversary

#22 - Emerald Anniversary

Season 1 - Episode 23 - Aired Mar 6, 2004

Rouge and Topaz are 'hanging out' when Rouge spots some beautiful jewelry in the store across the street, but Topaz blurts out 'Thief!' just to anger Rouge. Then Nelson, Chris' dad buys a expensive ring in the store, because it's his anniversary with Lindsay, Chris' mom. Meanwhile, at the Thorndyke's Mansion, Sonic, Tails, Amy, Cream, and Cheese recieve a phone call from Nelson, telling them to go to his office. But Sonic gets a weird reaction from his Chaos Emerald that he's holding, and it turns out that the 'ring' is actually a Chaos Emerald! Knuckles sees the reaction and goes straight to help the gang. But in the shadows Eggman sees the reaction too and decides to jump in with his giant robot to steal the Chaos Emerald for himself!

star 8.50
6 votes
A Dastardly Deed

#23 - A Dastardly Deed

Season 1 - Episode 25 - Aired Mar 20, 2004

Now we're on the wire. Six Chaos Emerald have been found, but Eggman has one, and plans to use his E-77 robot to seek out the last one. Meanwhile, Knuckles is looking for the Last Chaos Emerald too. He realizes that the only way for him, Sonic, Tails, Chris, Amy, Cream, and Cheese to get all the Chaos Emeralds is to team up with Eggman. So Knuckles visits the Thorndyke residance, but Sonic, Tails, Cream, Amy, and Cheese are out looking for the last Chaos Emereald as well, so Knuckles teams up with Chris to go to Eggman's base and ask for a partnership. Eggman agrees, but he asks if he can hold the Chaos Emeralds that they have, and foolishly Knuckles agrees. Chris and Knuckles try to keep it a secret from Sonic, Tails, Amy, Cream, and Cheese though. Meanwhile, it turns out that Eggman tricked him, and he steals the Chaos Emeralds for himself...as E-77 is returning with the last Chaos Emerald....what will happen next?

star 8.50
6 votes
Defective Detectives

#24 - Defective Detectives

Season 2 - Episode 13 - Aired Dec 11, 2004

The Chaotix Detectives made up of Vector the Crocodile, Espio the Chameleon, and Charmy the Bee have arrived in Station Square. Their goal is to find Cream for a specific reason, even when they think Sonic stole her. Meanwhile, Dr. Eggman rebuilds half the moon (after part of it was destroyed last episode) into the Eggmoon and claiming to Sonic that he has become reformed. Is this true? And will the others know why the Chaotix Detectives have come for Cream.

star 8.50
4 votes
Prize Fights

#25 - Prize Fights

Season 2 - Episode 19 - Aired Feb 19, 2005

A tournament at a nearby stadium is being held, with a red Chaos Emerald as the prize. Sonic, Tails, Knuckles, Rouge, Amy, Emerl, and several of their Station Square friends show up to participate in this outstanding event...

star 8.50
4 votes