Mutant Turtles: Choujin Densetsu-hen

Synopsis

After receiving Mutastones from Crys-Mu, the spirit of light, the Teenage Mutant Ninja Turtles gain the power to enhance themselves into Super Turtles for a three-minute span. Meanwhile, the evil Shredder and his cohorts Bebop and Rocksteady stumble upon the Dark Mutastone, which transforms them into Devil Shredder, Supermutant Bebop, and Supermutant Rocksteady, respectively. But the Turtles still hold a final trick within their shells: by uniting all four of them, they can assume their ultimate form—Turtle Saint.