Brad Wrangle was a stuntman working for Mallet Studios. He had ambitions of transitioning into producing movies. While scouting Serenity Springs as a shooting location, he discovered the Father of All Worlds and apparently became corrupted by it.

Wrangle took his film crew to the demon’s lair, where they were similarly coerced into obeying the demon with promises of power and wealth. Those who did not comply were apparently sacrificed to the demon’s appetites. Wrangle returned to Los Angeles to recruit another film crew under the pretense of shooting a low-budget movie. He took scriptwriter Buck Cowan, actress Clary Winters, and amateur stuntman Jack Russell to Serenity Springs with the intent of sacrificing them all to the Father of All Worlds. However, Russell was secretly the Werewolf by Night. His intervention stopped the ritual sacrifice, and Wrangle was killed when the angered demon devoured him because of his failure. The entity and the other cultists were all killed in the subsequent collapse of the cavern. Cowan and Winters, as well as their lycanthrope savior, escaped the cave-in and returned to Los Angeles.

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Brad Wrangle was an accomplished professional stuntman. As a servant of the Father of All Worlds, Wrangle had four tentacles growing from his chest resembling those which grew from the demon's body.