Capt. Steve Burton (51 episodes, 1968-1970)
Mark Wilson (51 episodes, 1968-1970)
Barry Lockridge (51 episodes, 1968-1970)
Dan Erickson (51 episodes, 1968-1970)
Valerie Scott (51 episodes, 1968-1970)
Betty Hamilton (51 episodes, 1968-1970)
Alexander B. Fitzhugh (51 episodes, 1968-1970)
Insp. Dobbs Kobick (9 episodes, 1969-1970)
SID Man / SID Officer / Third SID Man (5 episodes, 1969-1970)
Cop / Minor SID Official / SID Officer Burns / Technician (4 episodes, 1969-1970)
Gateman / Lt. Emar / Watchman Jake (3 episodes, 1969)
Museum Policeman / SID Man / Toy (2 episodes, 1968-1970)
Dr. Brule / Dr. Brulle (2 episodes, 1968-1969)
Inidu / Prof. Kirmus (2 episodes, 1969-1970)
Grotius / Jolo (2 episodes, 1969)
Capt. Ashim / Olds (2 episodes, 1969)
Carlos / General Aza (2 episodes, 1968-1970)
Dr. Kraal / Sgt. Eson (2 episodes, 1969)
1st Giant / P.G. Hanley (2 episodes, 1968-1969)
Giant Guard #1 / Officer (2 episodes, 1968-1969)
Dr. Greta Gault / Harem Dancer (2 episodes, 1969-1970)
Hook / Inspector Swan (2 episodes, 1968-1970)
Giant Scientist / Policeman (2 episodes, 1968-1969)
Miss Collier / Nurse Helg (2 episodes, 1969-1970)
Housewife / Nurse (2 episodes, 1969-1970)
Police Sergeant / Senior Scientist (2 episodes, 1968-1969)
Janitor / Passerby (2 episodes, 1970)
Policeman / SID Officer Willis (2 episodes, 1969-1970)
First Security Guard / Trainer (2 episodes, 1970)
Bobo - Gorilla / Gorilla (2 episodes, 1969-1970)
Giant Fugitive / Sergeant #2 (2 episodes, 1968-1969)
Major Kagan (1 episode, 1968)
Joe / Logar (1 episode, 1968)
Akman (1 episode, 1968)
Giant Photographer (1 episode, 1968)
Prof. Gorak (1 episode, 1968)
Marna Whelan (1 episode, 1968)
Giant Female (1 episode, 1968)
Convict (1 episode, 1968)
Murtrah (1 episode, 1969)
Egor Crull (1 episode, 1969)
Dr. Arno (1 episode, 1969)
Garak (1 episode, 1969)
O'Reilly (1 episode, 1969)
Joe Simmons (1 episode, 1969)
Titus (1 episode, 1969)
Prof. Gorn (1 episode, 1969)
Security Chief O. Bolgar (1 episode, 1969)
Nick (1 episode, 1969)
Ben Car (1 episode, 1969)
Zurpin (1 episode, 1969)
Nalor (1 episode, 1969)
Sgt. Gedo (1 episode, 1969)
Dr. Franzen (1 episode, 1969)
Parteg (1 episode, 1969)
Ranger Wilson (1 episode, 1969)
Talf Ekorb (1 episode, 1969)
Giant Camper (1 episode, 1969)
Biff Bowers (1 episode, 1969)
Moley (1 episode, 1969)
Kronig (1 episode, 1969)
Thorg (1 episode, 1970)
Bryk / Melzac (1 episode, 1970)
Mr. Erdap (1 episode, 1970)
Mr. Piper (1 episode, 1970)
Goalby (1 episode, 1970)
Taru (1 episode, 1970)
Andre (1 episode, 1970)
Luigi (1 episode, 1968)
Lobo (1 episode, 1968)
Giant Hobo (1 episode, 1968)
Janitor (1 episode, 1968)
Assistant Scientist (1 episode, 1968)
Granddaughter (1 episode, 1968)
Giant Boy (1 episode, 1968)
Giant Watchman (1 episode, 1968)
Mother - Mrs. Bara (1 episode, 1969)
Zoral (1 episode, 1969)
Trilling (1 episode, 1969)
Mr. Secretary (1 episode, 1969)
Giant Girl (1 episode, 1969)
Deputy Zarkin (1 episode, 1969)
Osla Ekorb (1 episode, 1969)
Martha Cass (1 episode, 1969)
Enog (1 episode, 1969)
Max Manfred (1 episode, 1969)
Constable (1 episode, 1969)
Mezron (1 episode, 1969)
Loach (1 episode, 1969)
Altha Franzen (1 episode, 1969)
Uncle Tojar (1 episode, 1969)
Chief Rivers (1 episode, 1969)
Okun (1 episode, 1969)
Dr. Lalor (1 episode, 1969)
Andros (1 episode, 1969)
Deenar (1 episode, 1969)
Carl (1 episode, 1969)
Krenko (1 episode, 1969)
Dolf (1 episode, 1969)
Berna (1 episode, 1970)
Dr. North (1 episode, 1970)
Dr. Marad (1 episode, 1970)
Lt. Grayson (1 episode, 1970)
Lisa (1 episode, 1970)
Dr. Krane (1 episode, 1970)
Tagor (1 episode, 1970)
Dr. Berger (1 episode, 1970)
Senator (1 episode, 1970)
Alek (1 episode, 1970)
Policeman #1 (1 episode, 1968)
2nd Giant / Malik (1 episode, 1968)
Pepi (1 episode, 1968)
Tramp (1 episode, 1968)
First Scientist (1 episode, 1968)
Giant Entomologist (1 episode, 1968)
Giant Guard #2 (1 episode, 1968)
Giant Model (1 episode, 1968)
Cabin Policeman (1 episode, 1968)
Jodar (1 episode, 1969)
Senator Obek (1 episode, 1969)
Prisoner (1 episode, 1969)
Mara (1 episode, 1969)
Sergeant (1 episode, 1969)
Mrs. Garak (1 episode, 1969)
Mrs. Perkins (1 episode, 1969)
Bartender Harry (1 episode, 1969)
Harry Cass (1 episode, 1969)
Fielder (1 episode, 1969)
Quigg (1 episode, 1969)
Sgt. Arnak (1 episode, 1969)
Logar (1 episode, 1969)
Mr. Derg (1 episode, 1969)
Sgt. Karf (1 episode, 1969)
Joey (1 episode, 1969)
Garna (1 episode, 1969)
Guard (1 episode, 1969)
Dr. Howard (1 episode, 1969)
Balloon Vendor (1 episode, 1969)
Secretary Mek (1 episode, 1969)
Bertha Fry (1 episode, 1970)
Brady (1 episode, 1970)
Mrs. Evers (1 episode, 1970)
SID Sergeant (1 episode, 1970)
Timmy (1 episode, 1970)
First Cop (1 episode, 1968)
Giant Guard (1 episode, 1968)
Curator (1 episode, 1968)
Giant Policeman #1 (1 episode, 1968)
Policeman (1 episode, 1968)
Giant Sentry (1 episode, 1968)
Second Scientist (1 episode, 1968)
Hood (1 episode, 1969)
Cameraman (1 episode, 1969)
Warden Sloan (1 episode, 1969)
Ranger Jack (1 episode, 1969)
Dal Ekorb (1 episode, 1969)
Mr. Clinton (1 episode, 1969)
Secretary (1 episode, 1969)
Policeman (1 episode, 1969)
Bron (1 episode, 1969)
Peddler Brynie (1 episode, 1969)
Super Giant Robot (1 episode, 1969)
Goldsmith (1 episode, 1969)
Hopper (1 episode, 1969)
Nell (1 episode, 1969)
Tobek (1 episode, 1969)
Second SID Man (1 episode, 1969)
Slave No. 1 (1 episode, 1969)
Grot (1 episode, 1969)
Arthur Kamber (1 episode, 1970)
Mylo (1 episode, 1970)
SID Guard Rogers (1 episode, 1970)
Sgt. Barker (1 episode, 1970)
Giant Policeman (1 episode, 1968)
Giant Policeman #2 (1 episode, 1968)
Cop #2 (1 episode, 1968)
Martin Reed (1 episode, 1969)
Small Giant Man Shoved by FitzHugh (1 episode, 1969)
First SID Man (1 episode, 1969)
Villager Peabody (1 episode, 1969)
Father - Mr. Bara (1 episode, 1969)
Groom (1 episode, 1969)
Special Policeman (1 episode, 1969)
Studio Gateman (1 episode, 1969)
Cunningham - Jeweler (1 episode, 1969)
Boy in Park (1 episode, 1969)
Newsboy (1 episode, 1969)
Messenger (1 episode, 1969)
Torg (1 episode, 1969)
Golan (1 episode, 1969)
The Monk (1 episode, 1969)
Giant Trapper (1 episode, 1969)
Dr. Zoral (1 episode, 1970)
Mike Warkin (1 episode, 1970)
Doc Jelko (1 episode, 1970)
Miss Smith (1 episode, 1970)
Delivery Boy (1 episode, 1968)
Mezron's Brother (1 episode, 1969)
Warden Barmak (1 episode, 1969)
Tedar (1 episode, 1969)
Villager Sloacum (1 episode, 1969)
Sergeant #1 (1 episode, 1969)
Pharmacist (1 episode, 1969)
Store Guard Warner Jr. (1 episode, 1969)
Leeda (1 episode, 1969)
Boy Witness (1 episode, 1969)
Knife Thrower (1 episode, 1970)
Newscaster (1 episode, 1969)
Fire Eater (1 episode, 1970)
Diane (1 episode, 1970)
Giant Police Guard / Giant Policeman (uncredited) (2 episodes, 1968-1969)
Old Man (uncredited) (1 episode, 1968)
Scientist (uncredited) (1 episode, 1968)
Hood #1 (uncredited) (1 episode, 1968)
Hood #2 (uncredited) (1 episode, 1968)
Boy (uncredited) (1 episode, 1968)
Man with Pipe (uncredited) (1 episode, 1968)
Machine (uncredited) (1 episode, 1969)
Kentucky Control (uncredited) (1 episode, 1969)
Flight Man (uncredited) (1 episode, 1969)
Sentry (uncredited) (1 episode, 1969)
Pharmacist (uncredited) (1 episode, 1969)
Circus Performer (uncredited) (1 episode, 1970)
Toy (uncredited) (1 episode, 1970)
Puppet Man (uncredited) (1 episode, 1970)
Guard (uncredited) (1 episode, 1970)