Everyone’s favorite ninja turtles, Leo, Raph, Donnie, and Mikey, are back! Set in their childhood years, this original series explores the early days of the iconic ninja turtles on their first adventures as ninjas-in-training. They’ll even be joined by their friend April O’Neil, and encounter foes like Bebop, Rocksteady, and Karai. Watch new episodes of Teeny Mutant Ninja Turtles on the Nick Jr. YouTube channel!