Jon Seda is an American actor. Seda was an amateur boxer who auditioned for and was given a role in the 1992 boxing film Gladiator. He played the role of Chris Pérez alongside Jennifer Lopez in the movie Selena, and portrayed U.S. Marine John Basilone, recipient of the Medal of Honor, in Tom Hanks and Steven Spielberg's The Pacific. On television, he had roles as Detective Antonio Dawson in NBC's Chicago P.D., and as Paul Falsone in NBC's Homicide: Life on the Street.

Gladiator is a 1992 American sports drama film directed by Rowdy Herrington, and starring Cuba Gooding Jr., James Marshall, Brian Dennehy, and Robert Loggia. The film tells the story of two teenagers trapped in the world of illegal underground boxing. One is fighting to pay off gambling debts accumulated by his father. The second is fighting for the money to get out of the ghetto. While being exploited by a boxing promoter, the two teens become friends.