The eccentric psychiatrist who runs the Haven psychiatric hospital. He employs Dan as his successor and keeps dangerous third-floor patients locked behind an electric door. His car is stolen by the escapees, and he is later killed by Preacher with an axe after visiting Dan's house.
Leo hires Dan and places him in the dangerous institutional role.
Leo Bain appoints Dan Potter to the staff of Haven as the successor to the departing psychiatrist.
Leo is Frank's psychiatrist and institutional authority.
Frank Hawkes is confined as one of the dangerous third-floor patients at Leo Bain's Haven.
Leo controls Preacher's confinement at Haven.
Byron "Preacher" Sutcliff is held among the third-floor patients under Leo Bain's psychiatric supervision.
Leo's hospital contains Skaggs before the escape.
Tom Smith / Skaggs is identified as a third-floor patient at Haven who escapes during the blackout.
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