James Coburn

Dr. Sidney Schaefer

Godfrey Cambridge

Don Masters

Severn Darden

Kropotkin

Joan Delaney

Nan Butler

Pat Harrington, Jr.

Arlington Hewes

Jill Banner

Snow White

Eduard Franz

Ethan Allen Cocket

Walter Burke

Henry Lux

Will Geer

Dr. Lee-Evan

William Daniels

Wynn Quantrill

Joan Darling

Jeff Quantrill

Arte Johnson

Sullivan

Martin Horsey

1st Puddlian

William Beckley

2nd Puddlian

Kathleen Hughes

White House Tourist

Soon-Tek Oh

Chinese Agent (uncredited)

Dyanne Thorne

Cocktail Waitress (uncredited)

Hank Worden

Dirty Old Man (uncredited)

Stephen Young

Man in Suit Killed in the Beginning (uncredited)