Nibbler vs. The Sons of Batman (live action Futurama 1960)
No Nibblers or Batmen were harmed in the making of this mashup. Excerpts are from the following public domain movies:
Atomic Rulers of the World (1964)
Evil Brain from Outer Space (1964)
The Manster (1962)
The Doomsday Machine (1972)
Alien Contamination (1980)
His Girl Friday (1940)
The superhero character is called "Super Giant" in Japan, or "Starman" in the edited English versions. I hope his unicorn antenna shows up clearly in these clips.
I made this!