Frankenstein and his monster are part of the creative commons now, and have been for some time, which means that anyone can make a Frankenstein movie or book without getting sued. You can pretty much make a Frankenstein anything. I know what you're thinking. You're getting some ideas for a Frankenstein theme park. It'll never work. Trust me. People will spend more time arguing on whether the creature is Frankenstein or Frankenstein's monster. Have you ever had that argument with someone?
This rare VHS gem is a story about Dr. Frankenstein turning two cavemen into new monsters of his creation. I feel like cavemen would already be confused, aggressive and strong anyway. I think turning them into monsters might be overkill. Just let those cavemen loose! Trust me, they'll do plenty of damage to the city.