Between 2003 and 2005, TMS Entertainment produced Sonic X, the first long-running anime series based on Sonic the Hedgehog. The series would be localised into English by 4Kids Entertainment, the company which had brought the Pokémon anime to the west. Sonic X would be the first Sonic animated series to make a concerted effort to adapt video games into storylines.

Sonic X instantly turned heads in the Sonic fan community for its vibrant animation and art style, along with its exciting machine designs for the mechanical foes Sonic and his friends would face. The English language cast would also go on to reprise their roles when their characters appeared in the Sonic video games for the next several years. Perhaps most notably of all, Sonic X represented the first time Mike Pollock voiced Doctor Eggman- a role he has retained until the present day.

The series’ third season would not actually air in Japan until 2020, airing initially in France in 2005 and later in the US from 2005-2006. This third season was a radical departure from the series format and, in a change nobody could have seen coming, had Sonic travelling through space. Throughout the three seasons, Sonic and his friends were joined by a selection of new characters, chief among which were Chris Thorndyke, a lonely child who made fast friends with Sonic. Note that the Sonic X comic series is listed on the Archie Comics page as the continuity disparities between the anime and the comic make them incompatible. Given Archie’s take on the Sonic multiverse, it can be assumed this is another alternate reality with similarities to the TV series.

The following table lists each Sonic X episode in order of their original airdate. Note that Beating Eggman was a two-part story. Please note that for the time being, this site concerns itself only with the English-language version of the series. This is subject to change in the future as we are aware the Japanese version’s scripts are quite different.

ENTRY	ORIGINAL AIRDATE	KINTOBOR COMPUTER REVIEW RANK
Chaos Control Freaks	6/4/03
Sonic to the Rescue	13/4/03
Missile Wrist Rampage	20/4/03
Chaos Emerald Chaos	27/4/03
Cracking Knuckles	4/5/03
Techno-Teacher	11/5/03
Party Hardly	18/5/03
Satellite Swindle	25/5/03
The Last Resort	1/6/03
Unfair Ball	8/6/03
Fly Spy	15/6/03
Beating Eggman	22/6/03
That’s What Friends Are For	6/7/03
Skirmish in the Sky	13/7/03
Depths of Danger	20/7/03
The Adventures of Knuckles and Hawk	27/7/03
The Dam Scam	3/10/03
Sonic’s Scream Test	10/8/03
Cruise Blues	17/8/03
Fast Friends	24/8/03
Little Chao Lost	31/8/03
Emerald Anniversary	7/9/03
How to Catch a Hedgehog	14/9/03
A Dastardly Deed	21/9/03
Countdown to Chaos	28/9/03
Pure Chaos	5/10/03
A Chaotic Day	12/10/03
A Robot Rebels	19/10/03
Heads Up, Tails!	26/10/03
Revenge of the Robot	2/11/03
Flood Fight	9/11/03
Project: Shadow	16/11/03
Shadow Knows	23/11/03
Sonic’s Big Break	30/11/03
Shadow World	7/12/03
Robotnik’s Revenge	14/12/03
Showdown in Space	21/12/03
Defective Detectives	28/12/03
Sunblock Solution	4/1/04
Eggman for President	11/1/04
A Date to Forget	18/1/04
Mean Machines	25/1/04
Sewer Search	1/2/04
Prize Fights	8/2/04
A Wild Win	15/2/04
Map Of Mayhem	22/2/04
The Volcanic Venture	29/2/04
The Beginning of the End	7/3/04
Running out of Time	14/3/04
Friends ’till the End	21/3/04
A New Start	28/3/04
A Cosmic Call	12/3/05
Cosmic Crisis	12/3/05
H2 Whoa	13/3/05
An Enemy In Need	14/3/05
A Chilling Discovery	15/3/05
Desperately Seeking Sonic	16/3/05
Galactic Gumshoes	17/3/05
Trick Sand	18/3/05
Ship of Doom	19/3/05
An Underground Odyssey	20/3/05
Station Break-In	21/3/05
A Metarex Melée	23/3/05
Mission: Match Up	5/4/05
Clash in the Cloister	6/4/05
Teasing Time	7/4/05
A Revolutionary Tale	8/4/05
The Planet of Misfortune	9/4/05
Terror on the Typhoon	10/4/05
Hedgehog Hunt	11/4/05
Zelkova Strikes Back	12/4/05
The Cosmo Conspiracy	13/4/05
Eye Spy	14/4/05
Agent of Mischief	15/4/05
The Light in the Darkness	16/4/05
A Fearless Friend	17/4/05
So Long, Sonic	18/4/05