- Joan Marsh
- Donna Wells
- John Archer
- Prof. J. Thomas Quincy
- Warren Hymer
- Gabby Walsh
- Milburn Stone
- Johnny Reilly
- Pat Gleason
- Louie Pozowicz
- Tristram Coffin
- Slater
- Ann Evers
- Milly
- Charles Judels
- Duke Talbot
- Gene O'Donnell
- Monk
- Ben Taggart
- Chief Detective W. A. Barlow
- Irving Mitchell
- Bob 'Pops' Wilson
- Charlie Hall
- Rabbit
- Billy Griffith
- Professor Dinwiddle
- Fern Emmett
- Mrs. Bowse
- Richard Cramer
- Martin
