Jail Bird is a mutant bird who is Scratch's sidekick. In the IDW Comics, Scrag is an inhabitant of Mutant Town. Scrag is a member of Rocksteady and Bebop's gang in the 80's Teenage Mutant Ninja Turtles sequence. Scumbug debuts in the 2012 Teenage Mutant Ninja Turtles episode "The Insecta Trifiecta". The exterminator acquired accidentally oozed and mutated into the mutant cockroach named Scumbug. Scumbug is a mutant cockroach.