Mutant Silverfish

The 'Mutant Silverfish are the primary antagonist of Rise of the Teenage Mutant Ninja Turtles issue 0. The encounter them while out looking for, and during the fight, they combine into one giant mutant. smashes them back apart with his tonfa, and they are all beaten by the Turtles and April, save for a few who end up chased by a crossing guard.