A bowling ball falls on Fred's head and Barney takes him to a doctor. However, this Dr. Frankenstone has a machine that can switch personalities and he's looking for a human guinea pig.

Watch Now

From $1.99 on Amazon Video



Episode credited cast:
Fred Flintstone (voice)
Barney Rubble / Dino / Guy #2 / Bat (voice)
Jean Vander Pyl ...
Wilma Flintstone / Pebbles Flintstone (voice) (as Jean Vanderpyl)
Gerry Johnson ...
Betty Rubble (voice)
Rest of cast listed alphabetically:
Len Frankenstone (voice)
Don Messick ...
Bamm-Bamm Rubble / Hoppy / Turtle / Cat / Barking (voice)
Doc (voice)
Doug Young ...
Dracuslab / Guy #1 / Dr. Zero / Pterodactyl (voice)


Bowling in alley 13, Fred is beaned by a bowling ball and suffers amnesia. But the doctor to whom Barney takes his friend is no ordinary family physician. He's conducting experiments in the switching of personalities, and Fred strikes him as the ideal test subject. Written by Morganalee

Plot Summary | Add Synopsis





Release Date:

24 September 1964 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
See  »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Message Boards

Recent Posts
Possible plot hole in episode? peggy714
Politically Incorrect Dragon000
Episode titled "Royal Rubble" willalexmac-1
Scary Flintstones episode jhlang
Why Does Practically Everyone Loathe Gazoo So Much?? jan-rola-rozycki
Am I The Only One Who Finds Wilma Hotter Than Betty? jan-rola-rozycki
Discuss Monster Fred (1964) on the IMDb message boards »

Contribute to This Page

Create a character page for: