Teenage Mutant Ninja Turtles Shirts and Tees Affiliated hand-picked Teenage Mutant Ninja Turtles Shirts from Redbubble, TShirtPalace and Zazzle. The Teenage Mutant Ninja Turtles (often shortened to TMNT or Ninja Turtles) are four fictional teenage anthropomorphic turtles who are named after four Renaissance Italian artists. They were trained by their anthropomorphic rat sensei in the [See Full Page]