Proxies live in mansion, they are obedient to Slenderman and kill whoever Slenderman orders to. Slenderman is pale, humanoid creature. He wears suit, has no face, is exremely tall, has evil and malicious intentions, godlike powers. Slendy can also read minds. He's like a strict, military father to his proxys. But he's manipulative at the same time. The mansions has Gothic, Victorian style. It looks old, with the garden behind it, the graveyard not so far away from  and the threatening aura.