The following is a list of episode summaries ofSonic X , an anime based on theSonic the Hedgehogvideo game series. Its original run was on Sundays from April 6, 2003 to March 28, 2004 with 52 episodes in total which are collectively known as Japanese "Series 1". Episodes 53-78, which are collectively known as "Series 2", never aired on TV or released on DVD in Japan but were available through rental streaming services. These episodes were first broadcast on TV in some other countries before they aired on US/UK Television.
The English dub of the episodes were produced by4Kids Entertainment(which aired on FOX on the Saturday morning block FoxBox, later renamed 4Kids TV, from 2003 to 2006). Episodes 1-52 were split were referred to as Seasons 1 and 2, each 26 episodes long, and episodes 53-78 were referred to as Season 3. However, the Saga Set DVD releases split the first two seasons further into six seasons, with each set containing 13 episodes.
Contents
- 1 Episode List
- 1.1 Season 1
- 1.1.1 New World Saga
- 1.1.2 Chaos Emerald Saga
- 1.2 Season 2
- 1.2.1 Chaos Saga (Sonic Adventure Adaption)
- 1.2.2 Shadow Saga (Sonic Adventure 2 Adaption)
- 1.2.3 Egg Moon Saga
- 1.2.4 Emerl Saga
- 1.2.5 Homebound Saga
- 1.3 Season 3 - The Metarex Saga
- 1.1 Season 1
Episode List
Season 1
New World Saga
Sonic blasts into Dr. Eggman's base to gain control of the Seven Chaos Emeralds and rescue his friends Cream & Cheese. In the heat of battle, all seven Chaos Emeralds are joined together, causing an overpowered Chaos Control to transport Sonic from his home planet, dropping him right in the middle of Station Square.
Is he alone in this human world? What happened to his friends? And why has he been sent here?
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 01 | "Supersonic Hero Appears!" | "Chaos Control Freaks" | April 6, 2003 | September 6, 2003 | ||
| Sonic the Hedgehog arrives at Dr. Eggman's base to rescue Cream and Cheese and retrieve the seven Chaos Emeralds. Tails and Amy help him, but they are attacked by robots and are blown away from the base. Knuckles saves them. Sonic tries to battle Eggman, but the machine that controls the Emeralds is damaged by the fight and it makes Chaos Control. Sonic finds himself in a different world full of humans. Suddenly, the police attack him, but fail the chase because Sonic is too fast. The S-Team and their leader Sam Speed try to get rid of him, but Sonic outruns them and jumps to the sky. He then falls above the city called Station Square. Suddenly, Sonic falls into a pool and he cannot swim. Sonic is then rescued by Chris Thorndyke. | ||||||
| 02 | "Infiltrate! Area 99" | "Sonic to the Rescue" | April 13, 2003 | September 13. 2003 | ||
| At the military research facility, called Area 99, Cream and Cheese are being scientifically examined. Chuck and Chris take Sonic to the vicinity of Area 99. Sonic sneaks into the facility alone. He wanders around the air vent for a while but finally manages to get into the lab where Cream and Cheese are. Although he releases the two successfully, the threesome are detected by security guards... | ||||||
| 03 | "Dr. Eggman's Ambition" | "Missile Wrist Rampage" | April 20, 2003 | September 20, 2003 | ||
| Eggman brings robot E-23 (which has a missile connected to his arm with wire) along with him and starts going berserk in town. Chris and Tails learn of this and go to look for Sonic. Unaware of everyone's worries, Sonic is enjoying a carefree journey. Eggman, in the meantime, takes hold of a large building and intercepts radio waves. The police are rendered helpless, and the mayor panics. Just when it looks as if all is over, Sonic makes his appearance... | ||||||
| 04 | "Get the Chaos Emerald!" | "Chaos Emerald Chaos" | April 27, 2003 | September 27, 2003 | ||
| The group and Dr. Eggman are under observation by the government. They decide to send an operative, Mr. Stewart, into the school system as a teacher to monitor Chris. Afterwards, a Chaos Emerald located at a construction site causes a machine to go berserk, which alerts Eggman, Sonic's group, Chris, and Mr. Stewart. They all eventually reach the site. Chris manages to sneak up on Eggman, who has found the emerald. Eggman manages to take the emerald away from Chris and runs to his little plane, but Chris soon catches up with him and manages to take the emerald away from Eggman. During that time Chris is knocked off of Eggman's plane and starts to fall. Mr. Stewart, who happens to be following Chris attempts to save him, but Sonic reaches him first. | ||||||
| 05 | "Clash!! Sonic vs Knuckles" | "Cracking Knuckles" | May 4, 2003 | October 4, 2003 | ||
| Knuckles, who parted from Sonic and the others to go off alone, hides away in the city. All over the city, he sees newspaper headlines that cry out "Unidentified Creature Discovered?!" He feels bitter each time he sees exaggerated articles about Sonic and his friends. Just them, he is contacted by Dr. Eggman, who schemes to use him to get rid of Sonic... | ||||||
| 06 | "Fierce Battle! School Wars" | "Techno-Teacher" | May 11, 2003 | October 11, 2003 | ||
| Dr. Eggman, who comes up with the best idea that the best way to conquer the world is to educate children, sends a robot over to Christopher's school. The robot he sends out is the "teacher robot". The robot sabotages Mr. Stewart's class, acts as the teacher and starts educating Chris and the others. However, the teacher robot forgets what his original purpose was and starts feeling euphoric about being respected... | ||||||
| 07 | "Giant Free-for-All! Chris' Home Party" | "Party Hardly" | 18 May 2003 | October 18, 2003 | ||
| When Mr. Stewart drops by for a surprise visit, Chris and Chuck have to keep Sonic and Friends' a secret. But things get messier and when the S-Team Leader, Chris' uncle, arrives and everyone including Ella and Mr. Tanaka find out Chris' secret. | ||||||
| 08 | "Emergency Launch! X-Tornado!" | "Satellite Swindle" | May 25, 2003 | October 25, 2003 | ||
| Dr. Eggman, who is angered at the satellites keeping watch over his base, sends out a robot to get rid of the satellites. The huge mouth of the robot swallows the satellites one after the other. From the monitor of the military base, the data of the spy satellites vanish one after the other. But this disrupts all television. And when the Tornado can't take the heat, Chuck and Tails plan to create a new plane called the X-Tornado (or as it's called in this episode, the Tornado X) to allow Sonic to enter space and destroy E-90. | ||||||
| 09 | "Amy on the Beach" | "The Last Resort" | June 1, 2003 | November 1, 2003 | ||
| An invitation to the commencement ceremony of a coastal ocean resort facility that is to open, is received at Chris' residence. Chris ends up going in place of his busy parents. Although Amy is happy at seeing the pamphlet, since she is not allowed to go to where many humans have gathered, she and the others of her kind accompany Chris, to the Thorndyke family's private beach... | ||||||
| 10 | "Fierce Fight! Sonic Baseball Team" | "Unfair Ball" | June 8, 2003 | November 8, 2003 | ||
| Tails is flight testing the X-Tornado when the Chaos Emerald is pulled back. They land on a baseball park that is to be destroyed. Tails goes inside and runs into the caretaker of the field, Al. Tails, who is overwhelmed with admiration at the beauty of the turf, tells Al why he is here and shows him the Chaos Emerald. Al, seeing the Chaos Emerald, is surprised and takes out a Chaos Emerald that he says he found yesterday... | ||||||
| 11 | "The Beautiful and Mysterious Thief Rouge" | "Fly Spy" | June 15, 2003 | November 15, 2003 | ||
| Rouge breaks into a jewellery shop at night. Her stealing technique is graceful. She is very fond of jewellery and gets a hold of every piece she lays her eyes on. However, the gem Rouge is really after is the Chaos Emerald. In the meantime, the President is considering launching an all-out attack on Eggman to stop him from his repeated attacks... | ||||||
| 12 | "Eggman's All-Out Base Attack! (Part 1)" | "Beating Eggman, Part 1" | June 22, 2003 | November 22, 2003 | ||
| The office of the President is polishing up a plan of attack on Eggman's base. The presidential envoys visit Chris' house and ask for Sonic's help, but their negotiations fail. The government attempts to infiltrate Eggman's base with a special force led by Rouge and Topaz in the gap they escaped the base from previously. Meanwhile, Tails and Chris discover the third Chaos Emerald in a field and fly for it in the X-Tornado, but Eggman and E-51 catch up and trap them. Having learned this, Sonic heads out to Chris' group's assistance. | ||||||
| 13 | "Eggman's All-Out Base Attack! (Part 2)" | "Beating Eggman, Part 2" | June 29, 2003 | November 29, 2003 | ||
| Sonic comes running to help Chris' group from their predicament, but the Chaos Emerald ends up being robbed under their noses by Eggman. When Sonic and the others follow him to his base with the X-Tornado, a battle between Eggman and the government's military unfolds before them there. Rouge, Knuckles, and the others who infiltrated the base set up a bomb in the power sector and attempt to escape, but they are locked up by the shutter door. Sonic has to take it upon himself to obtain the third and fourth Chaos Emeralds and defeat Eggman. | ||||||
Chaos Emerald Saga
Now being hailed as heroes thanks to what happened in the last arc, Sonic's friends are able to get out of the house more often and go explore other places around Earth. However, following the destruction of his base, Dr. Eggman is quickly able to build a replacement base: a flying fortress called the Egg Fort, and resumes his diabolical attempts to achieve world domination and collect the final Chaos Emeralds. With this, Sonic's feud with Dr. Eggman develops into a battle of wits and trickery.
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 14 | 1 | "Chase the Hero Sonic!" | "That's What Friends Are For" | 6 July 2003 | 6 December 2003 | |
| It's been quite recent since Eggman's base was destroyed. However, the press conference's topic is focused on Sonic, who is not present. The presidential aide is upset by this, believing that if this goes on, the President will lose his next election. Wanting to somehow raise the President's popularity, he decides to open up Sonic's victory celebration and have the photo of Sonic shaking hands with the President taken by the media. He immediately sends Sonic a written invitation. Chuck prepares brand new tuxedos for Sonic and the others. However, Sonic says he has something else to do. It turns out he promised to meet with Helen, a girl who is Chris' classmate and wheelchair bound. Wanting to have Sonic present at any cost, the aide uses special forces to chase after him. | ||||||
| 15 | 2 | "The Flying Fortress Egg Fort Attacks!" | "That's What Friends Are For" | 13 July 2003 | 13 December 2003 | |
| After his base got destroyed, Dr. Eggman spreads terror through the city with the mobile fortress Egg Fort that was hidden underground. Sonic rushes in to help, but he can't reach the high-flying Egg Fort. Chris and the others, exasperated at the fact that they could have reached it with the X-Tornado, are met with the plane arriving to where they are, brought by Tanaka in a trailer. Sonic boards the X-Tornado and assaults the Egg Fort. The great battle with the Egg Fort starts to unfold. | ||||||
| 16 | 3 | "Aim for it! The Sunken Ship in the Southern Sea" | "Depths of Danger" | 20 July 2003 | 17 January 2004 | |
| Sonic and Friends retrieve the fourth Emerald from a sunken ship, Eggman returns with his Egg Fort and attacks but Sonic uses a ring from Tails to destroy the robot with a Spin Attack. | ||||||
| 17 | 4 | "Knuckles! Clenched Fists of Anger" | "The Adventures of Knuckles and Hawk" | 27 July 2003 | 24 January 2004 | |
| After Hawk shows Knuckles the fifth Chaos Emerald Eggman's E-91 kidnaps Hawk for ransom, but during the trade Rouge enters and Chaos Emerald-keep away ensues until Knuckles defeats the robot, gets the Emerald, and receives a mysterious message from Tikal. | ||||||
| 18 | 5 | "Huge Shoot-out on the Savanna!" | "The Dam Scam" | 27 July 2003 | 24 January 2004 | |
| When Sonic, Tails, Chris and the Egg Fort crash land on the Nature Continent after a fight, Tails and Chris protest against a dam while Sonic is caught in a battle against Decoe, Bocoe, E-65 and Eggman, until Tails arrives with a ring and Sonic Spin Attacks his way to victory. | ||||||
| 19 | 6 | "The Ghost of King Boom Boo in the Old Castle" | "Sonic's Scream Test" | 10 August 2003 | 7 February 2004 | |
| During Chris' mom's movie shoot in a haunted castle, Sonic and friends are sucked into a mirror and King Boom-Boo possesses Amy until Chris figures out the ghosts' weakness and frees Sonic, who saves everyone else. | ||||||
| 20 | 7 | "Departure! Egg Fort II" | "Cruise Blues" | 17 August 2003 | 14 February 2004 | |
| Sonic and Co. are on a cruise when Eggman's Egg Fort appears inside a huge glacier. Sonic is unable to defeat three E-28 robots, until Knuckles arrives in a giant whale and together they smash the bots and the glacier, but the new Egg Fort 2 emerges from the ice and flies away. | ||||||
| 21 | 8 | "Speed Match! Sonic vs Sam" | "Fast Friends" | 24 August 2003 | 21 February 2004 | |
| When the President's Aide uses Sam Speed to challenge Sonic to a race for publicity, Sonic refuses so the Aide hires Eggman to force Sonic to race, and despite Eggman's tricks Sonic wins the race and the Aide is fired for consorting with Eggman. | ||||||
| 22 | 9 | "Summer Vacation ~ Chao Observation Diary" | "Little Chao Lost" | 31 August 2003 | 28 February 2004 | |
| While Chris and Co. are looking for Cheese who is lost amongst multiple Chao, Eggman spots them, thinking they found another Emerald, unleashes E-66 but E-66 almost kills the Chao until Sonic defeats E-66 and rescues the Chao from environmental destruction. | ||||||
| 23 | 10 | "Mayhem! 6 Chaos Emeralds" | "Emerald Anniversary" | 7 September 2003 | 6 March 2004 | |
| When Chris' dad buys a Chaos Emerald for a gift, Sonic and Friends, and Eggman duke it out for the emerald but Eggman unleashes Weazo and escapes with the sixth emerald while Knuckles helps Sonic defeat the robot. | ||||||
| 24 | 11 | "Wild Sonic! Strategic Capture Operation" | "How to Catch a Hedgehog" | 14 September 2003 | 13 March 2004 | |
| When Sonic goes berserk and can't stop running, Chris and Chuck discover that it's Eggman's E-88 behind Sonic's problem, but when Amy tries to stop it herself, she winds up in danger and it's Sonic to the rescue again. | ||||||
| 25 | 12 | "The Last Chaos Emerald" | "A Dastardly Deed" | 21 September 2003 | 20 March 2004 | |
| Sonic, Chris and the others are on board X Tornado to look for the last Chaos Emerald, using his robot E-77. However, as soon as E-77 takes off, it falls in the mountains and cannot get back on it's feet. It is rescued by Knuckles who is passing by. Knuckles, seeing Egg Fort 2 on the other side, comes up with an idea: maybe he could get Sonic and Eggman to call a truce to return home. He figures that the fastest way to get back, is to collect the Chaos Emeralds. However, instead of meeting Sonic, Chris ends up listening to what Knuckles has to say, and the two head into the forest where Eggman is. But Eggman betrays them and keeps all six emeralds for himself and kidnaps Chris, with the seventh emerald in the hands of his robot, Lucky. | ||||||
| 26 | 13 | "Birth! Super Sonic" | "Countdown to Chaos" | 28 September 2003 | 27 March 2004 | |
Having finding out what happened to Chris from Knuckles, Sonic and the others run after him in a hurry to save him and the Chaos Emeralds. While Sonic's able to get the last emerald from Lucky, Eggman has the other six and causes a tense battle ensues between Sonic and Eggman's E-99 Eggsterminator powered by the six Chaos Emerald that ends with Eggman losing control, Sonic and the Chaos Emeralds falling into the water, and Sonic to transform into his Super form to deal with the E-99, causing another Chaos Control that causes a mysterious island to appear.
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Season 2
Chaos Saga (Sonic Adventure Adaption)
It's six months since the second Chaos Control, and things in Station Square seem pretty quiet. But Eggman has secretly been cooking up his most devilish creation yet: Chaos. And the doctor has his new weird creature on a strange and dangerous diet. It grows more powerful with each Chaos Emerald he feeds it! And it's up to Sonic and Knuckles to stop this menace before they destroy Station Square.
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 27 | 1 | "The Beginning of Disaster" | "Pure Chaos" | October 5, 2003 | September 18, 2004 | |
| With Eggman defeated, it appears that the world has become peaceful again, but not too long after, Eggman resumes activity. He develops the new E-100 series of Eggman robots that have small animals inserted in them as pilot parts, takes along a monster known as Chaos, and is about to start wreaking havoc once again. | ||||||
| 28 | 2 | "The Mysterious Life Form Chaos" | "A Chaotic Day" | 12 October 2003 | 25 September 2004 | |
| While Knuckles has a mysterious vision about a girl named Tikal while looking for the Master Emerald pieces in Casinopolis, Sonic and Tails go hunting for Chaos Emeralds and have their two Chaos Emeralds stolen by Eggman and fed to Chaos at Windy Valley making it more powerful, After fighting an evolved Chaos, Sonic and Tails chase after Eggman and get locked in an air battle with the Egg Carrier, but the X-Tornado ends up crashing. Meanwhile Amy, who finds a small bird that fell from the Egg Carrier, gets captured by Eggman's robot E-100. | ||||||
| 29 | 3 | "Amy the Captive" | "A Robot Rebels" | 19 October 2003 | 2 October 2004 | |
| Chris and Big find Big's lost friend Froggy, but E-102 (Gamma) ends up capturing him. Chris and Big follow it and infiltrate the Egg Carrier. Eggman orders E-102 to bring the small bird from the prison Amy is in, but E-102 ends up being afflicted in front of her prison and releases both her and the small bird from there. Meanwhile, Sonic and Tails once again chase the Egg Carrier, with Knuckles coming along to find the broken pieces of the Master Emerald. | ||||||
| 30 | 4 | "Battle on the Egg Carrier" | "Head's Up, Tails!" | 26 October 2003 | 9 October 2004 | |
| After landing on the Egg Carrier on the X-Tornado, Sonic and Tails attempt to defeat E-102, but are stopped by Amy while Knuckles continues his quest for the Master Emerald pieces, and gets interrupted by another vision of Tikal. Meanwhile, Big and Chris find Froggy, but end up being met with Eggman. Sonic arrives at just the right moment to defeat Chaos. Sonic and Tails try to rescue Amy and Lily from Eggman. Chris and Big are caught in the Chaos monster while rescuing Froggy until Sonic extricates them. Afterwards, Eggman launches a missile bomb into a bridge in Station Square, which Tails defuses and saves the day. | ||||||
| 31 | 5 | "Gamma the Wanderer" | "Revenge of the Robot" | 2 November 2003 | 16 October 2004 | |
| After the previous battle on the Egg Carrier Sonic find himself in the Mystic Ruins. Where he finds and breaks into Eggman's underground base, the Final Egg. Where he has a climatic flight with Eggman's Egg Viper. At the same time, Amy is on a quest to find her small bird's family and Gamma starts going around various places to free the animals from his fellow robots but is soon met with E-101 (Beta), leading to a tense battle between the two. | ||||||
| 32 | 6 | "The Scream of Perfect Chaos" | "Flood Fight" | 9 November 2003 | 23 October 2004 | |
| It turns out that Chaos survived the previous battle and stops listening to Eggman. After obtaining all seven Chaos Emeralds, he evolves into a ferocious Perfect Chaos and starts instigates a devastating flood in Station Square. Then, Sonic's body suddenly shines in a bright light, and the mystery and truth of Chaos is revealed. | ||||||
Shadow Saga (Sonic Adventure 2 Adaption)
About a week after the floods, Eggman discovers the secret lab of his grandfather, Professor Gerald Robotnik. Freeing his creation Shadow the Hedgehog, Eggman uncovers his grandfather's plan to destroy the world! And even worse, with Shadow on the loose, Sonic's blamed for Shadow's criminal activity and is sent to Prison Island. Will Sonic be freed in time to stop Eggman's evil plan? Or is he already too late?
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 33 | 7 | 1 | "The Mystery of Project Shadow" | "Project Shadow" | 16 November 2003 | 30 October 2004 |
| Eggman hacks into the gov't's computer to see what they have planned against him. He stumbles on the diary of his grandfather, Prof. Gerald Robotnik, and learns about Shadow. The President asks Rouge to go undercover w/ Eggman. He assigns Stewart and Scarlet to investigate Project: Shadow. Eggman locates his grandfather's secret lab on Prison Island and frees the sleeping Shadow creature. Meanwhile, flood damage forces Chris and friends to separate and leave the mansion. | ||||||
| 34 | 8 | 2 | "Sonic the Fugitive" | "Shadow Knows" | 23 November 2003 | 6 November 2004 |
| Shadow commits a crime but instead a warrant goes out for Sonic's arrest. They finally meet one dark night in brightly lit Station Square. Sonic surrenders to the police and is taken to Prison Island. Rouge lures Eggman with an Emerald, which he will use to power his Eclipse Cannon. | ||||||
| 35 | 9 | 3 | "Escape From Prison Island" | "Sonic's Big Break" | 30 November 2003 | 13 November 2004 |
| Tanaka and Chris use a paddleboat to reach Prison Island. Amy frees Sonic from an underwater jail. Eggman tries to steal Emeralds for the Eclipse Cannon. Rouge gets locked in a vault with a timed bomb, which concludes in a fiery blast. Shadow leaves the island by beaming to Space Colony Ark with Chris, whom he thinks looks like Maria. | ||||||
| 36 | 10 | 4 | "The Threat From Outer Space" | "Shadow World" | 7 December 2003 | 20 November 2004 |
| Shadow transports Chris to a secret orbiting colony built by Eggman’s grandfather, Robotnik. Scarlet and Stewart search for Mr. Schmitz. Eggman unveils the Eclipse Cannon and threatens the President that he'll use it unless the population surrenders. Knuckles battles Egg Golem while Tails adapts the X-Tornado to fly into space to rescue Chris. | ||||||
| 37 | 11 | 5 | "The Space Colony ARK Battle" | "Robotnik's Revenge" | 14 December 2003 | 27 November 2004 |
| Scarlet interviews Schmitz about what happened 50 years ago on Space Colony Ark. Sonic and the gang rockets to Chris's rescue, but Eggman ambushes him with an ultimatum. When Eggman fires up the Eclipse Cannon, he receives a recording from his grandfather revealing that he had his own plan to wipe out the world... | ||||||
| 38 | 12 | 6 | "Maria's Request, Everyone's Request" | "Showdown in Space" | 21 December 2003 | 4 December 2004 |
| Gerald Robotnik reveals that his desire to destroy the world stems from a need to avenge the loss of his precious Maria. Sonic and company also realize that the only way to stop the Eclipse Canon is to deactivate the Chaos Emeralds with the Master Emerald. Together with Shadow, Sonic saves the world by stopping it from crashing into the colony. | ||||||
Egg Moon Saga
To make up for his destruction of half of the moon, a seemingly sincere Eggman has repaired it. But, during the New Year celebration, the orbiting Egg Moon blocks the sun. By using his giant mirror towers, Eggman rapidly restores the light and Station Square's citizens hail him as their hero. But Sonic- suspecting another Eggman trick- topples the towers...and becomes public enemy #1. Are Sonic's dark suspicions right...or has Eggman finally seen the light?
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 39 | 13 | 1 | "The Chaotix Detective Agency" | "Defective Detectives" | 28 December 2003 | 11 December 2004 |
| A detective team consisting of Vector, Espio and Charmy is introduced, who appear to be looking for Cream and start loitering around her location. Meanwhile, Eggman claims to have a change of heart and goes out of his way to repair the moon he previously destroyed with the colony's cannon, but his true motives are unclear. | ||||||
| 40 | 14 | 2 | "Eggman Corporation" | "Sunblock Solution" | 4 January 2004 | December 18, 2004 |
| Sonic and Co.'s New Year's celebration is interrupted when the Egg Moon blocks the sun, covering the world in darkness. To make up for it, Eggman lights the town with giant Mirror Towers that power his specially designed Sunshine Balls. Although Eggman is praised as a hero, Sonic is not convinced, and starts toppling his Mirror Towers, much to the shock everyone else. | ||||||
| 41 | 15 | 3 | "We Can See the Light!" | "Eggman for President" | 11 January 2004 | January 22, 2005 |
| The town grows restless and increasingly angry at Sonic for wrecking the Mirror Towers and Sonic is gets pursued by the authority for his rampage. And while he's on the run, his friends go after him in search for his reason for why he did it. Just as things almost get out of control, however, Sonic reveals to the others that Eggman was purposely causing the Egg Moon to obstruct the sunlight so that he could brainwash the people with his Sunshine Balls. Knuckles later restores sunlight to the town by kicking the Egg Moon out of the way. | ||||||
Emerl Saga
Dr. Eggman is finally behind bars and Earth is once again at peace. But with the appearance of a Gizoid named Emerl and Eggman plotting his breakout, the long awaited peace may not be around for long.
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 42 | 16 | 1 | "Amy's Love Escape Journey!?" | "A Date to Forget" | 18 January 2004 | 29 January 2005 |
| Sonic promises a date with Amy, but does not show up no matter how much time passes. Amy is furious and ends up going on a car trip with Sam Speed, who just happened to visit. However, this is where they encounter an Eggman mech that intends to free Eggman, who was imprisoned for his previous actions. Meanwhile, Cream and Cheese discover an unfamiliar face in the garden of Chris' house. | ||||||
| 43 | 17 | 2 | "Huge Home Electronics Panic!!" | "Mean Machines" | 25 January 2004 | 5 February 2005 |
| While the imprisoned Eggman, Decoe and Bocoe are put to work in a home electronics factory, they insert a mysterious chip in many of the products. Due to that, the whole city's home appliances start moving on their own and attacking humans. Sonic and the others have to find a solution to this problematic situation. | ||||||
| 44 | 18 | 3 | "The Ridiculous Epic Spy Battle" | "Sewer Search" | 1 February 2004 | 12 February 2005 |
| As the search for an escaped Eggman commences, Chris and co. chase Eggman through the sewers only to be captured by the moustached fiend in the end. Sonic finally comes to the rescue, and with Emerl's help, he battles his way out of Eggman's underground lair. | ||||||
| 45 | 19 | 4 | "Sonic Battle: Opening!!" | "Prize Fights" | 8 February 2004 | 19 February 2005 |
| In a plot to capture the elusive Eggman, the President holds a no-holds-barred tournament... and the grand prize is a Chaos Emerald! With Sonic, as well as Knuckles and Chris, and even Emerl all end up participating. | ||||||
| 46 | 20 | 5 | "Sonic Battle: Finale!!" | "A Wild Win" | 15 February 2004 | 26 February 2005 |
| It is time for the finals, however Emerl reacts to the Chaos Emerald and starts going berserk, with everyone joining in the fight to stop him. However, with his Skill Get ability that makes him able to copy the moves of others, he is quite a formidable threat. With only | ||||||
Homebound Saga
Sonic and his friends must race back to their home planet before time freezes.
Sonic's world is set to converge with planet Earth and will cause a Time Suspension Phenomenon (in other words, time will die). The only solution is for Sonic and co to go in through the out door and return back where they came from. Can Tails and Chuck perfect a machine in time to avert the disaster? Will Eggman be allowed to join them? Will Chris let his best friend go?
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 47 | 21 | 1 | "Big Decisive Battle on Latitude 0!!" | "Map of Mayhem" | 22 February 2004 | 5 March 2005 |
| When a battleship suddenly vanishes, Sonic and company must set sail on a rescue mission. Little do they know it’s all part of Eggman’s plan to establish his empire by setting off a chain of volcanoes! Can Sonic unravel this mystery before catastrophe erupts? | ||||||
| 48 | 22 | 2 | "Sonic VS the Monster from Underground" | "The Volcanic Venture" | 29 February 2004 | 12 March 2005 |
| Time is ticking down as Eggman’s scheme to set off a volcano chain nears its explosive climax. Sonic and friends are forced to go underground… where they discover a cavernous kingdom. The group will be in a lava trouble unless they can enlist some unlikely allies! | ||||||
| 49 | 23 | 3 | "The Day the World Stood Still" | "The Beginning of the End" | 7 March 2004 | 12 March 2005 |
| Sonic’s carefree ways start a national craze… but everybody’s in for a shock when it’s discovered that two worlds are warping into one! Now Sonic and his plans must head homeward before a cosmic collision stops time in its tracks! | ||||||
| 50 | 24 | 4 | "Morning of Farewells" | "Running Out of Time" | 14 March 2004 | 19 March 2005 |
| Sonic and friends must race back to their home planet before time freezes up. But their departure is delayed when a crazed commander launches an all-out assault against Dr. Eggman. Will Sonic set their rivalry aside to aid his archenemy? | ||||||
| 51 | 25 | 5 | "Chris' Long Journey" | "Friends 'Til the End" | 21 March 2004 | 19 March 2005 |
| Tails and the others return to their planet. But when Sonic tries to follow, Chris creates a new crisis by turning off the transport machine! If Sonic stays, time will stop and the world will be locked in limbo. Can Chris learn to say goodbye before it’s too late? | ||||||
| 52 | 26 | 6 | "Memories of the Wind" | "A New Start" | 28 March 2004 | 26 March 2005 |
It’s homecoming time for Sonic and even Eggman is celebrating. The dastardly doc is soon up to his old tricks, however, as he sends Tails into a tailspin! Sonic will have to set a new speed record to save his foxy friend!
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Season 3 - The Metarex Saga
Six months after returning from Earth, Sonic faces off against a mysterious metal warrior, eager to steal the Chaos Emeralds from him. Even in his Super form, Sonic proves no match, and has to use Chaos Control to send the Chaos Emeralds away. And that's only the start of his troubles!
More machines show up, making off with the "planet egg" from Sonic's world, the source of all its life energies. Without the planet egg, Sonic's home will perish, and there's no way he'll let that happen! Taking to space aboard Tails' newest invention, the gang heads out to fight this steely foe. But their new friend from another world, Cosmo, is worried. Even if Sonic is the last hope to defeat the Metarex, can he really do it?
| No. overall | No in season | No. in Arc | Original Title (Japanese) | Title (English) | Original airdate (JP) | Original airdate (US) |
| 53 | 1 | "The Messenger from a Meteor Shower" | "A Cosmic Call" | March 25, 2020 | September 10, 2005 | |
| 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 surprise appearance. | ||||||
| 53 | 2 | "The Spaceship Blue Typhoon" | "Cosmic Crisis" | March 26, 2020 | September 10, 2005 | |
| 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 Tails' Blue Typhoon Ship, powered by the Master Emerald (that was stolen), 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. | ||||||
| 53 | 3 | "The Water Planet Hydo" | "H2 Whoa" | March 27, 2020 | September 24, 2005 | |
| 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! | ||||||
| 53 | 4 | "Dr. Eggman Joins the War!" | "An Enemy in Need" | March 31, 2020 | October 1, 2005 | |
| Planet Secco's Planet Egg has been returned, and as life for its inhabitants returns to normal Sonic and friends are honored for their heroism. Meanwhile, Knuckles has found one of the Chaos Emeralds, and Eggman is determined to take it. He tricks Knuckles into believing he has changed his ways. Sonic and the others see through Eggman's trick, though. While Sonic and Knuckles fight it out, Eggman and Rouge both scheme to steal the Emerald. But a new Metarex gets in their way. It's a four-way free for all, with a Chaos Emerald as the prize! | ||||||
| 64 | 11 | "Space Fortress Metal Plant" | "Station Break-In" | 9 April 2020 | 19 November 2005 | |
| Both Eggman and Sonic's gang have located the last 2 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! | ||||||
| 53 | 12 | "Clash! Sonic vs Shadow" | "A Metarex Melée" | 10 April 2020 | 26 November 2005 | |
| 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. | ||||||
