List of Sonic X episodes

The following is a list of episode summaries of Sonic X, an anime based on the Sonic the Hedgehog video game series. Its original run was on Sundays from 6 April 2003 to 28 March 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 by 4Kids 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.

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?

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.

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.

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!

Egg Moon Saga
To make up for his destruction of half of the moon, Dr. Eggman has repaired it. But, knowing the mad man, it may be the start of another evil scheme.

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.

Homebound Saga
Sonic and his friends must race back to their home planet before time freezes.

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?