Children's Corner: Teenage Mutant Ninja Turtles (1990)

In New York, mysterious radioactive ooze has mutated four sewer turtles into talking, upright-walking, crime-fighting ninjas. The intrepid heroes - Michelangelo, Donatello, Raphael and Leonardo - are trained in the Ninjutsu arts by their rat sensei, Splinter. When a villainous rogue ninja, who is a former pupil of Splinter, arrives and spreads lawlessness throughout the city, it's up to the plucky turtles to stop him.