Fishface

Xever is one of The Shredder's top henchman. He was a Brazilian master thief, that is until he was sent to prison (after trying to steal a briefcase, possibly filled with money). There he made his own weapons, and it was also where Shredder found him. He then became on of his top henchmen in the Foot Clan, and works as Shredder's third in command. After coming face-to-face with Shredder's enemies (the Turtles) a few times, he came into contact with a substance known as mutagen, transforming him into an anthropomorphic fish, which Michelangelo dubbed "Fishface".

Trivia

 * Fishface will make his first guest appearance in Turtle's Adventures of The Little Mermaid.
 * Fishface will become Pooh and Ash's enemy in Pooh's Adventures of Teenage Mutant Ninja Turtles (2012).
 * Fishface will become Littlefoot's enemy in Littlefoot's Adventures of Teenage Mutant Ninja Turtles (2012 TV series).