Sach is given a post-hypnotic suggestion that turns him into a championship prizefighter.
| Actor | Role |
|---|---|
 Leo GorceySlip Mahoney | Slip Mahoney |
 Huntz HallSach Sullivan | Sach Sullivan |
 Gale RobbinsGloria Williams | Gloria Williams |
 Gabriel DellGabe Moreno | Gabe Moreno |
 Ben WeldenBull Laguna (as Ben Weldon) | Bull Laguna (as Ben Weldon) |
 William BenedictWhitey (as Billy Benedict) | Whitey (as Billy Benedict) |
 Bobby JordanBobby | Bobby |
 David GorceyChuck | Chuck |
 Bernard GorceyLouie | Louie |
 Ian KeithMr. Raymond, the Hypnotist | Mr. Raymond, the Hypnotist |