Nickelodeon Teenage Mutant Ninja Turtles, Mutant Shredders Action Figures Mutated from ooze and raised in the ways of ninjutsu by their Rat sensei, Splinter, the Teenage Mutant Ninja Turtles have risen from their sewer lair to battle evil everywhere Shrimp and crab Shredder mutants 2013 Viacom international Inc. All Rights reserved; Teenage Mutant Ninja Turtles and all related titles, logos and characters are trademarks of Viacom international Inc