"Sorry man, I'm kind of sick, you can't come in!" Thomas says to him through the door, his new, deep wolf voice making wonders. "Holy crap dude, you DO sound sick... It's ok, another time it'll be" He says, as he starts walking away.
Thomas breathes heavily, trying to recover himself from the shock. There is no longer a costume! He examines his whole body, but instead of fabric covering his skin, now he sports grey short fur all over. He uses his clawed hands to feel his new muzzle and wet nose, as you notice your long white hair moving with the breeze in the room, along with your new wolf tail.
In that moment, a dark aura surrounded Thomas. "You are Wolfrun" the voices said. "Who's there?" Thomas roared with his deep voice, but no one answered. "You are Wolfrun. You have a mission to do" The voice insisted, as Thomas' mind started getting cloudy. All those memories about being a human were being erased, and then replaced with memories of always being Wolfrun. "I am.. I am Wolfrun." Thomas said. "I need to.. need to obey..." He says to himself, feeling the evil forces changing his mind and body.
When it finishes, Wolfrun chuckles. "Now I'm back to follow my master's orders". He extends a clawed hand, and a dark book appears on it. "Let's see... now I have the power to draw on human's negative emotions... maybe I'll be able to control them to do my bidding." Wolfrun says, as he sniffs the air. Wolfrun can perceive the human that was on the other side of the door. "Perfect, I have a prey now" He says, stretching his wolf muscles, aching for the chase.