Leo Howard (born July 13, 1997) is an American actor, model and martial artist. He began his acting career at the age of seven, Howard is known for incorporating his karate skills into his feature film and television roles; as "Young Snake-Eyes" in the 2009 action film, G.I. Joe: The Rise of Cobra, as "Young Conan" in the 2011 fantasy film, Conan the Barbarian, and as "Jack" on the Disney XD comedy series, Kickin' It.