Bernhardt made his acting debut in the leading role in Bloodsport II: The Next Kumite (1996). He also appeared in two of its sequels and starred in Future War (1997), True Vegeance (1997), Perfect Target (1997), G2 - Mortal Conquest (1999), Black Sea Raid (2000) and Global Effect (2002). In 1998-1999 he has also starred in TV-series Mortal Kombat: Konquest.
In 2003, he has appeared as Agent Johnson in The Matrix Reloaded (2003), and in 2005 he has appeared with Chuck Norris in The Cutter. In 2007 he has also appeared in Children of Wax. In 2010 he announced his retirement from acting.
In 2013, he returned to acting with Jason Statham in Parker (2013) and in a cameo in The Hunger Games: Catching Fire (2013) as the male tribute from District 9.