Teenage Mutant Ninja Turtles coloring pages. The Ninja Turtles are four fictional teenaged anthropomorphic turtles named after Italian Renaissance artists: Leonardo, Michelangelo, Donatello and Raphael. They were trained by their anthropomorphic rat sensei in the art of ninjutsu. From their home in the sewers of New York City, they battle petty criminals, evil overlords, mutated creatures, and alien invaders while attempting to remain hidden from society. They were created by Kevin Eastman and Peter Laird.