Nickelodeon Teenage Mutant Ninja Turtles Pre-Cool Half Shell Heroes Bebop and Rocksteady Figures Young heroes will enjoy recreating Turtle adventures of inventing their own - controlling the action as imaginations soar in a world of heroes and mutants, adversaries and allies. It's a new adventure every time you play. Turtle Power! You can collect the entire world of Half-Shell Heroes 2013 Viacom International Inc. All Rights Reserved. TEENAGE MUTANT NINJA TURTLES and all related titles, logos and characters are trademarks of Viacom International Inc