Older Leroy Jethro Gibbs (voice) (uncredited) (16 episodes)
Older Leroy Jethro Gibbs (uncredited) (1 episode)
Executive Producer (18 episodes)
Self - Narrator (voice) (6 episodes)
Narrator (voice) (8 episodes)
Leroy Jethro Gibbs (4 episodes)
Executive Producer (139 episodes)
Leroy Jethro Gibbs (voice) (1 episode)
Lucas Davenport
Executive Producer
Superman (voice)
Self - Guest (1 episode)
James Foster
Leroy Jethro Gibbs (435 episodes)
Executive Producer (32 episodes)
Leroy Jethro Gibbs (2 episodes)
Simon Donovan (4 episodes)
Jim Wesley
Director (2 episodes)
Bob Markham (voice) (1 episode)
Thomas Capano (2 episodes)
Thomas Capano
Bruce Barkow
Lawrence
Charles Lattimer
John Cooper
Magazine Reporter
Wally Schirra (1 episode)
Tommy Nance
Jeremy Hampton
Jack McNeil (96 episodes)
Director (2 episodes)
Charlie Grace (9 episodes)
Producer (6 episodes)
Dominant Male
Jack Black
Johnathan Franye
Mickey Knox in TV
Sheriff Johnny Behan
Alex Davenport
Det. Dicky Cobb (44 episodes)
Frank Flynn
Charles Spencer
Ertie Robertson
David Shepard
John Dillinger
Taylor Worth
Chance Wayne
Billy Wyatt
Jay Austin
Elmer Jackson
Mr. Freddy Shoop
Self - Host (1 episode)
Sam Crawford (4 episodes)
Self - Nominee (3 episodes)
Self (1 episode)
Ted Bundy
Robin Prince
Gacel Sayah
Robert Caldwell (59 episodes)
Peter Cabot (2 episodes)
Field Carlyle (37 episodes)
Johnny Edge (3 episodes)
Fielding Carlyle
Doug Bradbury (3 episodes)
Thib Thibideaux (13 episodes)
Larry Simpson
Billy Joe Meynert
Captain John McIntosh (12 episodes)
Norman Brinker
Howie Lesser
Mike Breen (6 episodes)
Robert Dunlap
Ronnie Striker (1 episode)
Officer Gus Corbin (1 episode)
Ofcr. Dave Gordon (1 episode)
Stanski (1 episode)
Paul Donin (1 episode)
Student Controller