Originally from Albuquerque, New Mexico, Warner got his first break on a Joe Pytka directed Nike commercial; this led to several other national campaigns and also work as a stuntman in the U.S. and Asia. In addition to being an actor, Warner has also written several screenplays and short stories. Prior to pursuing an acting career, Warner was a member of the United States Track and Field Team in the decathlon and also competed on the U.S. Bobsled Team.