Peter Lind Hayes
饰 August Zabladowski
Mary Healy
饰 Heloise Collins
Hans Conried
饰 Dr. Terwilliker
Tommy Rettig
饰 Bartholomew Collins
Robert Heasley
饰 Uncle Judson
Jack Heasley
饰 Uncle Whitney
Alan Aric
饰 Elevator Operator (uncredited)
Henry Kulky
饰 Stroogo (uncredited)
Tony Butala
饰 Boy Pianist (uncredited)
Kim Charney
饰 Kim - Boy in Line (uncredited)
Diki Lerner
饰 Dancer in Dungeon Ballet (uncredited)
Harry Wilson
饰 Guard / Doorman (uncredited)
