Leif Tilden on the left with Michelan Sisti on the right.

Leif Tilden (born March 20, 1964) is an American actor, puppeteer, director and writer, who played Robbie Sinclair in the sitcom Dinosaurs, and gorillas in various films including George of the Jungle, Ace Ventura: When Nature Calls and Buddy. He is probably most famous for playing Donatello in Teenage Mutant Ninja Turtles and its sequel, being the costume actor for both.

He also wrote and directed the 2001 short bigLove and co-directed the 2001 Dogme film Reunion.

He was a witness in the O. J. Simpson trial.


  • The actors who played the Turtles all have cameos in the first movie without their turtle suits on. Lief Tilden “Donatello” — Plays the Foot Messenger that meets April O'Neil in the subway station.