Ernie Reyes Jr. (born January 15, 1972) is an American actor and martial artist, known for his acting work in films such as The Last Dragon, Red Sonja (1985), as Donatello's stuntman in Teenage Mutant Ninja Turtles (1990), Teenage Mutant Ninja Turtles II: The Secret of the Ooze (1991), Surf Ninjas (1993) and The Rundown (2003). He has also done stunt work in films such as Indiana Jones and the Kingdom of the Crystal Skull, as well as motion capture stunts in films such as Avatar and Alice in Won
Source: Wikipedia