who plays agent callen on ncis los angeles
G. Callen G. Callen (born: Grisha Alekandrovich Nikolaev) is a fictional character in the show NCIS: Los Angeles portrayed by Chris O'Donnell. He is an NCIS Special Agent in Charge, and the senior agent assigned to the Office of Special Projects. O'Donnell made his first appearance during NCIS' sixth season episode "Legend (Part 1)".
Daryl Mitchell (actor) Daryl "Chill" Mitchell (born 16 July 1965)[1] is an American actor. He is known for such roles as Dexter Walker on The John Larroquette Show, Tommy Webber in Galaxy Quest, Leo Michaels on Veronica's Closet, Eli Goggins III on Ed, and Patton Plame on NCIS: New Orleans.