|This character exists primarily or exclusively within the Sonic X anime or comic continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
Gamma was created as one of the first of Dr. Eggman's E-100 Series, along with Beta, Delta and Epsilon. After succeeding in capturing Froggy while the others failed, he was ordered to take away Lily, a little blue bird. Amy refused to hand her over, and the robot was stunned. He realized that he was just Dr. Eggman's tool. He rescued Amy and Lily, becoming her friend. Under Eggman's control, he attacked Sonic and then the hedgehog nearly destroyed him but Amy stopped him. Afterwards, Gamma deleted the image of him in his head. He then reprogrammed his brothers. After reprogramming Zeta on the Egg Carrier, Beta attacked him and they engaged in combat. Gamma eventually removed the Flickies inside them and they collapsed, "dying". Their hands were then put together in front of Amy (Japanese version only).
- In the English version, Gamma's voice is high-pitched instead of deep like Sonic Adventure.
- Unlike Sonic Adventure, Amy sees Gamma destroyed.
|Heroes||Sonic | Tails | Amy | Knuckles | Cream | Cheese | Chris | Big | Tikal | Vector | Espio | Charmy | Cosmo|
|Neutral/Anti-hero||Shadow | Rouge | Chaos | Emerl | Gamma | Zero | Beta | Delta | Epsilon | Zeta|
|Villains||Eggman | Decoe and Bocoe | Bokkun | Biolizard/FinalHazard | Dark Oak | Red Pine | Yellow Zelkova | Pale Bay Leaf | Black Narcissus|
|Groups||Chao | Metarex | G.U.N. | E-Series | Team Sonic|
|Miscellaneous||Gerald Robotnik | Maria | Vanilla | Molly | Hertia/Earthia | Galaxina | Nazo|
|Transformations||Super Sonic | Super Shadow | Dark Sonic | Final Nova | Cosmo's transformation|