Mad scientist injects his enemies with acromegaly virus, causing them to become hideously deformed.
| Actor | Role |
|---|---|
 J. Carrol NaishDr. Igor Markoff | Dr. Igor Markoff |
 Ralph MorganAnthony Lawrence | Anthony Lawrence |
 Tala BirellMaxine | Maxine |
 Wanda McKayPatricia Lawrence | Patricia Lawrence |
 Terry FrostBob Blake | Bob Blake |
 Glenn StrangeGiant | Giant |
| AAlexander PollardButler | Butler |
 Sam FlintDr. Adams | Dr. Adams |