Teenage Mutant Ninja Turtles - S01

When the Teenage Mutant Ninja Turtles get Mutastones from Crys-Mu, the spirit of light, they gain the power to turn themselves into Super Turtles for three minutes at a time. Meanwhile, the evil Shredder and his henchmen Bebop and Rocksteady come across the Dark Mutastone, which turns them into Devil Shredder, Supermutant Bebop, and Supermutant Rocksteady. But the Turtles have one more trick up their shells: all four of them can merge into their ultimate form, Turtle Saint.