You have to give credit to producer-director Al Adamson he has a rare talent for getting well-known actors to star in his atrocious movies. This film (and several other Adamson projects) was put together slowly over a period of years. What Adamson ended up with was a film that features J. Carrol Naish (in his last role) as Dr. Frankenstein, living under an alias while he manages an amusement park (!), Lon Chaney, Jr. (in his last role) is Frankenstein's moron assistant who obediently fetches the heads of young girls. Russ Tamblyn ("West Side Story", "tom thumb") plays an aging biker. Even Jim Davis (Jock Ewing from "Dallas") has a part in this disaster. And Forest J. Ackerman (editor of Famous Monsters of Filmland) is one of the monster's victims, along with Anthony Eisley ("The Navy versus the Night Monster").
Adamson also manages to insult several famous props from classic films; some of the lab equipment he used is from "The Bride of Frankenstein". Adamson's busty blond wife (Regina Carrol) is bitten by Dracula (played by an actor named Zandor Vorkov, who looks like Frank Zappa in "Kiss" makeup). Frankenstein also has a dwarf assistant, played by Angelo Rossitto, who starred in the bizarre 1932 film "Freaks". All in all, a remarkable film from the man who gave the world "Blood of Ghastly Horror".
