Metal Sonic (In Another Time, In Another Place)

An alternate version of Metal sonic from the alternate dimesion of the In Another Time, In Another Place stories contained in the Sonic the Hedgehog and Sonic Universe comics published by Archie Comics. It is an alternate reality counterpart of Metal Sonic 3.0 from Mobius Prime. Created to outmatch and defeat Sonic the Hedgehog.

Sonic the Hedgehog 4 ep II Adaptation
Metal Sonic appears only in a flashback. When Tails tells Sonic that Little Planet has returned, he has a flashback of meeting and beating Metal.

The Olympic Games
When Dr Eggman traps Sonic's friends at the Olympics, Sonic Challenges the doctor. But Eggman uses the excuse of his "weak back, or whatever", and calls in his replacement; Metal Sonic. Metal then competes with its organic counterpart in every olympic event until they reach the final event; the hundred meter dash. At first Sonic is too drained to run but after he empowers himself with the olypmpic spirit the robot is defeated and it retreats with Eggman.

Sonic & All Stars Racing Transformed Adaptation
(in need of info)