Eggrobo

Egg Robo is a robotic clone of Robotnik, similar to how Metal Sonic is a robotic clone of Sonic. Unlike Robo-Robotnik from the Archie comics, or Metal Sonic from any continuity, Egg Robo is a dedicated slave.

Egg Robo made his first appearance in Sonic R. He later appeared as a hidden characer in the kart racing stage of Sonic Adventure 2 Battle.