Pierre Potkin
Claude Horton
Aloysius C. Whittaker
Dr. Philip 'Painless' Pennington
Roscoe Horne
Newton
Elmer
Dr. Dudley
Himself
Hercules Grub
Alexander
Spider Robbins
Slick Foster
Julius Swift
Eggbert G. Higginbothom
Julius Caesar
Dr. J. Dockweiler Droop
Zander Ulysses Parkhurst
Robert Woolsey
Addington Ganzy
Gilbert Simpson
Ginger Dandy
Prof. Cunningham
Himself / host
Ned Lovett
