Mutant Ninja Turtles: Superman Legend

The Teenage Mutant Ninja Turtles have the ability to transform into Super Turtles for three minutes when they receive Mutastones from Crys-Mu, the spirit of light. The Dark Mutastone is discovered by the evil Shredder and his henchmen Bebop and Rocksteady, who are then transformed into Devil Shredder, Supermutant Bebop, and Supermutant Rocksteady, respectively. The Turtles do, however, have one more trick up their sleeves: they can all come together to become Turtle Saint, which is their ultimate form.