Anon Y.

Hoody (aka John) and Masky (aka Tim) are a team, the way they kill is simple, Tim and John screw up your house and John goes outside, waiting for you to wake or get back while he looks for a large rock or a brick, then when you get in Masky tackles you, and waits for Hoody who comes in and breaks the rock/brick over your head. They were friends in grade school and together had a fight with a bully doing this same thing to him, now loving the kill of anyone they choose.