Kay Kyser
Himself
Peter Lorre
Professor Karl Fenninger
Boris Karloff
Judge Spencer Mainwaring
Bela Lugosi
Prince Saliano
Helen Parrish
Janis Bellacrest
Dennis O'Keefe
Chuck Deems
Alma Kruger
Aunt Margo Bellacrest
Ginny Simms
Herself
Harry Babbitt
Himself
M.A. Bogue
Ish Kabibble