Abusive boyfriend of a woman Katrina observes in a bar. Katrina forces him to drive to a remote canyon to serve as the human soul for her repayment debt. He fights back and hits her with a rock. Later, he is bitten by a rattlesnake, which Katrina uses as the opportunity to kill him. He reappears as a hitchhiker at the film's end.
Billy exerts psychological and physical control over his partner, making him a prime target for Katrina's mission.
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