
Paul Maxwell (born Maxim Popovich; November 12, 1921 – December 19, 1991) was a Canadian actor who worked mostly in British cinema and television, in which he was usually cast as American characters.
[biography (excerpted) from Wikipedia]
Kolben
Van Leuwen
Lieutenant John E Donovan
Bill Freed
Detective Sgt. Singer
Lab Technician
Saul
Jim Landry
Andy Markham
Panama Hat
Buzz Wepner
Jim Lewis
CIA Man
Scott Benson
Capt. Baxter
Captain Paul Travers
World President (voice)
Captain Grey / DT19 Pilot (voice)
Captain Grey / 1st Policeman (voice)
Captain Grey / Guard (voice)
General Ward (voice)
Captain - USS Panther II (voice)
Captain Grey / General Tiempo / Porter Benson (voice)
Supreme Commander of Earth Forces (voice)
Fire Chief (voice)
Base Commander (voice)
Captain Grey / Breck (voice)
1st Policeman (voice)
Judson Murphy
Maj. Gen. Maxwell D. Taylor
Al Stevens
Don Fleming
Agent Hopkins
Major Smith
Mike, assistant coroner
Bill Freed
Colonel Cutler
Perez
Jim Perkins
Maj. Russell
CIA Director
Commander Spelling U.S.N.
Bill Martin
Mike Foster
Steve Crandall
Bud Fredericks (uncredited)
Sam Webber
Colonel Steve Zodiac (voice)
Sheepherder No. 1
Esterbrook
Steve Zodiac / Captain Grey (voice)
Connors
Mr Baxter
Colonel Steve Zodiac (voice)
Colonel Steve Zodiac / Mrs Doughty (voice)
Doctor Chilton
Captain Paul Travers (voice)
Colonel Fischer
Elijah Baley
C.M.A.A.
Andrew Tolliver
Eugene Hellman
Doctor (uncredited)
Paul
Lt.Gen. Geoffrey Keyes
Dr. Jack Russell
Submarine Captain
Captain Grey / World President / Fire Chief (voice)
Jeffrey Clayton
Capt. Calvelli
Mace
Barrington Cabot
Mylos
Craig Owen
Lt. Cmdr. Bill Hallohan
Dr. Wallace
Captain Grey / Breck (voice)