Chris O'Donnell

as Captain Don Hart(25 eps)

as Self

as Self(1 ep)

as Pete's Agent (uncredited)(1 ep)

as G. Callen(1 ep)

as Self(1 ep)

as Self(1 ep)

as John Gibbons (voice)

as Self(1 ep)

as G. Callen(1 ep)

as Shane

as Bob

as Self(1 ep)

as G. Callen(323 eps)

as Self - Guest(1 ep)

as Jason Colvin

as Mr. Kittredge

as Jack McAuliffe(3 eps)

as Jason Payne(7 eps)

as David Turzin

as Finn Dandridge(9 eps)

as G. Callen (voice)(1 ep)

as Wardell Pomeroy

as G. Callen(3 eps)

as Bill(1 ep)

as Self(1 ep)

as Self - Guest(3 eps)

as The Hitman

as Robin (archive footage)

as Peter Garrett

as Jimmie

as Self(1 ep)

as Self(1 ep)

as Jason Brown

as Self

as Self(1 ep)

as Robin / Dick Grayson

as Brad Stanfield(4 eps)

as Ernest 'Ernie' Hemingway

as Adam Hall

as Robin / Dick Grayson

as Self - Host / Robin

as Matt Leland

as Jack Foley

as Glenn Johnson

as D'Artagnan

as Self - Guest(1 ep)

as Charlie Simms

as Chris Reece

as Buddy Threadgoode

as Chris Macauley

as Self - Guest(2 eps)

as Evan(1 ep)

as Self - Presenter(2 eps)

as Self - Performer(1 ep)

as Self(2 eps)

as Self(1 ep)

as Self - Presenter(1 ep)