Screwloose (The Next Chapter)

Screwloose is a superhero wannabe and sidekick of Wingnut.

History
Screwloose was a member of the Foot Clan. He was "rescued" by Baxter Stockman after he was mutated and his mutant parents died in a tragedy at the Mutant Circus. He was trained in the ways of ninjutsu by Shredder, and after being trained, he was raised by Stockman, treating him and the other mutants like he would his children. Screwloose loved his mutant brothers and sisters, but the strongest relationship he made was with his sister Wingnut, who wanted to be a superhero. A superhero wannabe, too, he became her sidekick.

After the Turtles killed Shredder and defeated Stockman, Screwloose, Wingnut and the other mutants went to live with April O'Neil, Master Splinter, and the Turtles in the antique shop above April's apartment.