Season
- Season 3 2009-08-06
- Season 2 2003-10-05
- Season 1 2003-04-06
Episode
- Episode 1: A Cosmic Call
- Episode 2: Cosmic Crisis
- Episode 3: H2 Whoa
- Episode 4: An Enemy in Need
- Episode 5: A Chilling Discovery
- Episode 6: Desperately Seeking Sonic
- Episode 7: Galactic Gumshoes
- Episode 8: Trick Sand
- Episode 9: Ship of Doom
- Episode 10: An Underground Odyssey
- Episode 11: Station Break-In
- Episode 12: A Metarex Melee
- Episode 13: Mission: Match-Up
- Episode 14: Clash in the Cloister
- Episode 15: Teasing Time
- Episode 16: A Revolutionary Tale
- Episode 17: The Planet of Misfortune
- Episode 18: Terror on the Typhoon
- Episode 19: Hedgehog Hunt
- Episode 20: Zelkova Strikes Back
- Episode 21: The Cosmo Conspiracy
- Episode 22: Eye Spy
- Episode 23: Agent of Mischief
- Episode 24: The Light in the Darkness
- Episode 25: A Fearless Friend
- Episode 26: So Long Sonic
Sonic X Season 3 Agent of Mischief
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.
