A demonic entity posing as a man who manipulates the grieving Bates family. He moves into their home, feigns a prior relationship with Pattie, and exploits the parents' vulnerabilities. He assaults Pattie, reveals supernatural powers during a prayer, attempts to radicalize Tom, and flees when Pattie awakens.
Martin serves as the predatory antagonist who violates Tom's family, creating a direct life-and-death conflict.
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