Ashura is a palette glitch in Sonic the Hedgehog 2.
Team X Comics[]
Ashura was one of Sonic's rivals. After getting beaten up one time too many, he destroyed the Freedom Fighter's HQ. After realizing that he was now evil, he apologized for his actions, fixed the HQ, and joined Speedy's team, Team X.
Sonic Nega and The green hedgehog[]
One day, Sonic Nega was walking, then Sonic told Ashura to attack SN. Ash was defeated, and robotized by SN.