After getting stranded on Earth, Sonic and his friends team up with 12-year-old Chris Thorndyke to collect all the Chaos Emeralds and defeat the evil Dr. Eggman.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Chaos Control Freaks | 2003-08-23 | 30 min |
| Season 1 | Episode 2 | Sonic to the Rescue | 2003-09-13 | 30 min |
| Season 1 | Episode 3 | Missile Wrist Rampage | 2003-09-20 | 30 min |
| Season 1 | Episode 4 | Chaos Emerald Chaos | 2003-09-27 | 30 min |
| Season 1 | Episode 5 | Cracking Knuckles | 2003-10-04 | 30 min |
| Season 1 | Episode 6 | Techno Teacher | 2003-10-11 | 30 min |
| Season 1 | Episode 7 | Party Hardly | 2003-10-18 | 30 min |
| Season 1 | Episode 8 | Satellite Swindle | 2003-10-25 | 30 min |
| Season 1 | Episode 9 | The Last Resort | 2003-11-01 | 30 min |
| Season 1 | Episode 10 | Unfair Ball | 2003-11-08 | 30 min |
| Season 1 | Episode 11 | Fly Spy | 2003-11-15 | 30 min |
| Season 1 | Episode 12 | Beating Eggman (1) | 2003-11-22 | 30 min |
| Season 1 | Episode 13 | Beating Eggman (2) | 2003-11-29 | 30 min |
| Season 1 | Episode 14 | That's What Friends are For | 2003-12-06 | 30 min |
| Season 1 | Episode 15 | Skirmish in the Sky | 2003-12-13 | 30 min |
| Season 1 | Episode 16 | Depths of Danger | 2004-01-17 | 30 min |
| Season 1 | Episode 17 | The Adventures of Knuckles and Hawk | 2004-01-24 | 30 min |
| Season 1 | Episode 18 | The Dam Scam | 2004-01-31 | 30 min |
| Season 1 | Episode 19 | Sonic's Scream Test | 2004-02-07 | 30 min |
| Season 1 | Episode 20 | Cruise Blues | 2004-02-14 | 30 min |
| Season 1 | Episode 21 | Fast Friends | 2004-02-21 | 30 min |
| Season 1 | Episode 22 | Little Chao Lost | 2004-02-28 | 30 min |
| Season 1 | Episode 23 | Emerald Anniversary | 2004-03-06 | 30 min |
| Season 1 | Episode 24 | How to Catch a Hedgehog | 2004-03-13 | 30 min |
| Season 1 | Episode 25 | A Dastardly Deed | 2004-03-20 | 30 min |
| Season 1 | Episode 26 | Countdown to Chaos | 2004-03-27 | 30 min |
| Season 2 | Episode 1 | Pure Chaos | 2004-09-18 | 30 min |
| Season 2 | Episode 2 | A Chaotic Day | 2004-09-25 | 30 min |
| Season 2 | Episode 3 | A Robot Rebels | 2004-10-02 | 30 min |
| Season 2 | Episode 4 | Heads Up, Tails! | 2004-10-09 | 30 min |
| Season 2 | Episode 5 | Revenge of the Robot | 2004-10-16 | 30 min |
| Season 2 | Episode 6 | Flood Fight | 2004-10-23 | 30 min |
| Season 2 | Episode 7 | Project: Shadow | 2004-10-30 | 30 min |
| Season 2 | Episode 8 | Shadow Knows | 2004-11-06 | 30 min |
| Season 2 | Episode 9 | Sonic's Big Break | 2004-11-13 | 30 min |
| Season 2 | Episode 10 | Shadow World | 2004-11-20 | 30 min |
| Season 2 | Episode 11 | Robotnik's Revenge | 2004-11-27 | 30 min |
| Season 2 | Episode 12 | Showdown in Space | 2004-12-04 | 30 min |
| Season 2 | Episode 13 | Defective Detectives | 2004-12-11 | 30 min |
| Season 2 | Episode 14 | Sunblock Solution | 2004-12-18 | 30 min |
| Season 2 | Episode 15 | Eggman For President | 2005-01-22 | 30 min |
| Season 2 | Episode 16 | A Date to Forget | 2005-01-29 | 30 min |
| Season 2 | Episode 17 | Mean Machines | 2005-02-06 | 30 min |
| Season 2 | Episode 18 | The Sewer Search | 2005-02-12 | 30 min |
| Season 2 | Episode 19 | Prize Fights | 2005-02-19 | 30 min |
| Season 2 | Episode 20 | A Wild Win | 2005-02-26 | 30 min |
| Season 2 | Episode 21 | Map of Mayhem | 2005-03-05 | 30 min |
| Season 2 | Episode 22 | The Volcanic Venture | 2005-03-12 | 30 min |
| Season 2 | Episode 23 | The Beginning of the End | 2005-03-12 | 30 min |
| Season 2 | Episode 24 | Running Out of Time | 2005-03-19 | 30 min |
| Season 2 | Episode 25 | Friends 'Til the End | 2005-03-19 | 30 min |
| Season 2 | Episode 26 | A New Start | 2005-03-26 | 30 min |
| Season 3 | Episode 1 | The Cosmic Call | 2005-09-10 | 30 min |
| Season 3 | Episode 2 | Cosmic Crisis | 2005-09-17 | 30 min |
| Season 3 | Episode 3 | H2Whoa | 2005-09-24 | 30 min |
| Season 3 | Episode 4 | An Enemy In Need | 2005-10-01 | 30 min |
| Season 3 | Episode 5 | A Chilling Discovery | 2005-10-08 | 30 min |
| Season 3 | Episode 6 | Desperately Seeking Sonic | 2005-10-15 | 30 min |
| Season 3 | Episode 7 | Galactic Gumshoes | 2005-10-22 | 30 min |
| Season 3 | Episode 8 | Trick Sand | 2005-10-29 | 30 min |
| Season 3 | Episode 9 | Ship of Doom | 2005-11-05 | 30 min |
| Season 3 | Episode 10 | An Underground Odyssey | 2005-11-12 | 30 min |
| Season 3 | Episode 11 | Station Break-In | 2005-11-19 | 30 min |
| Season 3 | Episode 12 | A Metarex Melee | 2005-11-26 | 30 min |
| Season 3 | Episode 13 | Mission: Match-Up | 2005-12-03 | 30 min |
| Season 3 | Episode 14 | Clash in the Cloister | 2006-02-04 | 30 min |
| Season 3 | Episode 15 | Teasing Time | 2006-02-11 | 30 min |
| Season 3 | Episode 16 | A Revolutionary Tale | 2006-02-18 | 30 min |
| Season 3 | Episode 17 | The Planet of Misfortune | 2006-02-25 | 30 min |
| Season 3 | Episode 18 | Terror on the Typhoon | 2006-03-04 | 30 min |
| Season 3 | Episode 19 | Hedgehog Hunt | 2006-03-11 | 30 min |
| Season 3 | Episode 20 | Zelkova Strikes Back | 2006-03-18 | 30 min |
| Season 3 | Episode 21 | The Cosmo Conspiracy | 2006-04-01 | 30 min |
| Season 3 | Episode 22 | Eye Spy | 2006-04-08 | 30 min |
| Season 3 | Episode 23 | Angel of Mischief | 2006-04-15 | 30 min |
| Season 3 | Episode 24 | The Light in the Darkness | 2006-04-22 | 30 min |
| Season 3 | Episode 25 | A Fearless Friend | 2006-04-29 | 30 min |
| Season 3 | Episode 26 | So Long Sonic | 2006-05-06 | 30 min |
| Sound | Hideaki Takatori | Theme Song Performance |
| Production | Yuji Naka | Producer |
| Production | Ken Corday | Producer |
| Sound | Hironobu Kageyama | Theme Song Performance |
