Robotnik Jr.

A son created by Dr. Robotnik in an effort to carry on his evil when he passed on, Robotnik Jr. soon became an enemy of Scratch and Grounder. Through Sonic's efforts of trying to make him chose for himself, Robotnik Jr. continually denies that Scratch and Grounder are after. It's only after a freak accident that he does decide to change sides, and saves Sonic's life. Much to Robotnik's displeasing, Robotnik Jr. ditches him and decides to fight evil. When he's recaptured by Robotnik to try and reprogram him, he falls in love with Breezie and the two are able to escape thanks to Sonic's help.