A Proxy of Slender Man is a human who serves the supernatural being, acting as a helper, enforcer, or intermediary. Proxies perform tasks for Slender Man that he cannot do alone, such as manipulating objects, leaving cryptic messages, or directly attacking. Slender Man's victims. Slenderman's mansion is a dream-like, dilapidated, large house with random, shifting doors. Slenderman's woods are typically dark, dense, and filled with trees, creating a claustrophobic and disorienting environment.