Diego Klattenhoff

as Roger McLaren (1 episode)

as Liam

as Alan Rutter

as Donald Ressler (218 episodes), Director

as Yancy Becket

as Veteran Ranger

as Troy

as Billy

as Eli (1 episode)

as Mike Faber (25 episodes)

as Officer Michael Tate (1 episode)

as Henry

as Mike Callahan (22 episodes)

as Tom Crawford (1 episode)

as Dirk

as Charlie Quinn

as Young Dutch

as Ivan Palacinke (6 episodes)

as Willis Lee

as Nathaniel (uncredited)

as Dylan Maxwell (1 episode)

as Derek (13 episodes)

as Zach

as Duane Tanner (1 episode)

as Sasha