Jonathan "Jon" Seda (born on October 14 1970 in New York) is an American actor. Seda began boxing before his career in acting started. His first role actually was in the movie Gladiator (1992) which is centered in boxing. He has stared in many films some of which include: Bad Boys II (2003), Bullet to the Head (2012), Twelve Monkeys (1995), Primal Fear (1996), Selena (1997). Also he has been in many notable TV shows which include: Homicide: Life on the Street (46 episodes), Oz (3 Episodes), House M.D. (Guest role 1 episode) and The Pacific (Miniseries).Since January 2014, he has starred as Detective Antonio Dawson in the NBC drama series Chicago P.D. and Chicago Justice.