Professor Brawn has been swinging a dumbbell for so long he looks like one!
| Actor | Role |
|---|---|
 Billy BevanProfessor Brawn | Professor Brawn |
 Madeline HurlockMrs. Strong | Mrs. Strong |
 Vernon DentHector Strong | Hector Strong |
 Ruth TaylorNurse | Nurse |
 Thelma HillGuest | Guest |
| MMarvin LobackMale Nurse | Male Nurse |
 William McCallMale Nurse | Male Nurse |
 Stanley BlystoneCop | Cop |