Gemerl

Gemerl (ジーメル) is a character from the Sonic the Hedgehog series that appears in the Archie Comics crossover Worlds Unite.

History
Gemerl is a powerful robot created by Dr. Eggman. He clashed with Sonic the Hedgehog in service to Eggman, before betraying the doctor and taking on a powerful new form, which forced Eggman and Sonic to join forces against him. After being defeated, Gemerl was found by Vanilla the Rabbit, who took him to Miles "Tails" Prower to be repaired and reprogrammed, giving him a good personality. Gemerl subsequently took up residence in Mobotropolis with Vanilla, her daughter Cream the Rabbit, and the Chao Cheese and Chocola, living peacefully with them.

Worlds Unite
During M'egga Man's attack in Mobotropolis, Gemerl is asked to help the Freedom Fighters, showing up to put an end to the Roboticized Master. Unfortunately, M'egga Man's arsenal proved to be a greater obstacle than the android could counter, and he is defeated with an energy beam on his face at point blank. (Sonic the Hedgehog #273)