- Jim Piersall as Wallace
- John Piersall as Gromit
- Mary Piersall as Fluffles
- Dr. Brown as Mr. Growbag
- Mrs. Piersall as Lady Tottington
- Young Jim Piersall as Hutch
- Reporter Slade as Mr. Mulch (uncredited)
- Joe Cronin as Vicar (uncredited)
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