Terry Moore

Character: Kotty

Frank Lovejoy

Character: Prof. Sam Bastion

Keenan Wynn

Character: George

Lee Marvin

Character: Slob / Mr. Gregory

Whit Bissell

Character: Eddie

Jess Barker

Character: Artie

Donald Murphy

Character: Pope

Frank De Kova

Character: Prof. Claude Dillon

Len Lesser

Character: Perch

Fred Gabourie

Character: Lookout