Sonic X
Season 1, Episode 25: A Dastardly Deed
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Sonic and the gang try to find the last Chaos Emerald before Dr. Eggman; Knuckles decides to help Dr. Eggman as a way to get back to his home.
All Episodes - Season 1
Episode 1
Chaos Control Freaks
Episode 2
Sonic to the Rescue
Episode 3
Missile Wrist Rampage
Episode 4
Chaos Emerald Chaos
Episode 5
Cracking Knuckles
Episode 6
Techno Teacher
Episode 7
Party Hardly
Episode 8
Satellite Swindle
Episode 9
The Last Resort
Episode 10
Unfair Ball
Episode 11
Fly Spy
Episode 12
Beating Eggman (1)
Episode 13
Beating Eggman (2)
Episode 14
That's What Friends Are For
Episode 15
Skirmish in the Sky
Episode 16
Depths of Danger
Episode 17
The Adventures of Knuckles and Hawk
Episode 18
The Dam Scam
Episode 19
Sonic's Scream Test
Episode 20
Cruise Blues
Episode 21
Fast Friends
Episode 22
Little Chao Lost
Episode 23
Emerald Anniversary
Episode 24
How to Catch a Hedgehog
Episode 25
A Dastardly Deed
Episode 26
Countdown to Chaos