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The Beast of Yucca Flats, formerly known as Joseph Javorsky, is the main antagonist of the 1961 American horror film The Beast of Yucca Flats.

A Russian scientist named Joseph Javorsky flees from the authorities only to be mutated by the radiation at the Yucca Flats nuclear testing site, turning him into a violent monster.


The Beast of Yucca Flats is a large obese Caucasian man with a scarred face. He wears a torn lab coat and a pair of black pants.

Powers and Abilities

The Beast of Yucca Flats possesses the following powers and abilities:

  • Superhuman strength
  • Human intelligence


The beast is shot to death by police and dies caressing a small jackrabbit.


  • The creature was played by Swedish professional wrestler and B-movie actor Tor Johnson.

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