Characters played by Leo Gorcey
Slip Mahoney
Characters played by Huntz Hall
Sach
Characters played by Gabriel Dell
Gabe Moreno
Characters played by Alan Napier
Dr. Druzik
Characters played by Jane Adams
Nancy Marlowe
Characters played by William 'Billy' Benedict
Whitey
Characters played by Bernard Gorcey
Louie
Characters played by Glenn Strange
Atlas the Monster
Characters played by Benny Bartlett
Butch
Characters played by David Gorcey
Chuck
Characters played by Skelton Knaggs
Hugo
Characters played by William Yetter Sr.
Otto
Characters played by Minerva Urecal
Mrs. Hoskins
Characters played by Chester Clute
Mike Barton
Characters played by Pat Goldin
Father
Characters played by Robert Coogan
Young Man
Characters played by Fred Aldrich
Carnival Patron
Characters played by Stanley Blystone
Henchman
Characters played by Anna Chandler
Woman
Characters played by Kit Guard
Benny
Who Announces Fire at Sam's
Characters played by Frank O'Connor
Carnival Patron
Characters played by Tim O'Connor
Hoskins Boy
Characters played by Kent Odell
Hoskins Boy
Characters played by Whitey Roberts
Juggler
Characters played by Sammy Shack
Carnival Patron
Characters played by Harry Tyler
Constable Isiah Hoskins