Mickey Rooney as Lester M. 'Baby Face Nelson' Gillis

Carolyn Jones as Sue Nelson

Cedric Hardwicke as Doc Saunders (as Sir Cedric Hardwicke)

Leo Gordon as John Dillinger

Anthony Caruso as John Hamilton

Jack Elam as Fatso Nagel

John Hoyt as Samuel F. Parker

Ted de Corsia as Rocca

Elisha Cook Jr. as Homer van Meter

Duke Mitchell as Solly

Robert Osterloh as FBI Agent Johnson

Thayer David as Connelly

Dabbs Greer as FBI Agent Charles Bonner

George E. Stone as Mr. Hall

Lisa Davis as Ann Saper – the Lady in Red

Emile Meyer as Mac – Detective

Dan Terranova as Miller

Murray Alper as Alex – Bank Guard

Harry Antrim as Pharmacist

Tom Fadden as Postman Harkins

Dick Crockett as Powell

Paul Baxley as Aldridge

Sol Gorss as Preston

Gil Perkins as Duncan

Hubie Kerns as Kearns