Jason Beghe
Sergeant Hank Voight
Sophia Bush
Detective Erin Lindsay
Patrick John Flueger
Officer Adam Ruzek
Detective Kevin Atwater
Elias Koteas
Detective Alvin Olinsky
Jon Seda
Detective Antonio Dawson
Jesse Lee Soffer
Detective Jay Halstead
Marina Squerciati
Officer Kim Burgess
Desk Sgt. Trudy Platt
Officer Sean Roman
Jon Seda

Jon Seda

Detective Antonio Dawson

Jon Seda stars as Antonio Dawson, an honest detective in the Chicago P.D. Intelligence Unit in the NBC drama "Chicago P.D."

Seda, a New Jersey native and amateur boxer, hung up his gloves in 1992 when he made his screen debut as a fighter in "Gladiator." Throughout the '90s, Seda's star rose through the films "Carlito's Way" and "Twelve Monkeys," though it wasn't until he appeared in NBC's "Homicide: Life on the Street" that Hollywood took serious notice.

In 1996, Seda received critical acclaim at the Cannes Film Festival for his role in the film "The Sunchaser" opposite Woody Harrelson. Seda played the love interest of Jennifer Lopez in the film "Selena," based on the true story.

His television credits include series regular roles on "Kevin Hill" and "Close to Home" and recurring roles on "Ghost Whisperer" and "Oz." Seda has also guest-starred on "Hawaii Five-0," "The Closer," "Burn Notice," "House," "CSI: Miami," "NYPD Blue," "Las Vegas" and "Law & Order," among many others.

In 2010, Seda appeared in the Emmy Award-winning HBO World War II miniseries "The Pacific," starring as legendary U.S. Marine Jon Basilone. He later joined the cast of the acclaimed HBO series "Treme" as a series regular.