Mark Caso is a gymnast, actor, and stuntman who performed Leonardo in Teenage Mutant Ninja Turtles II: The Secret of the Ooze. He also made an on-camera cameo as a newsroom staffer. He reprised the role of Leonardo in the non-Henson Teenage Mutant Ninja Turtles III and has played stunt roles in the Mortal Kombat movies and TV series. In television, Caso played stunt aliens on V and a stunt vampire on Buffy the Vampire Slayer.

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