You are the little brother of Fenrir. You are cursed to be forever stuck in your werewolf form, being able to do everything a normal human can except you're in a werewolf body.

Bellatrix was fatally hurt during the Battle of Hogwarts, but was able to escape, using the chaos of the battle as cover. She's made it as far as the Forbidden Forest. However, since her side has lost the war and her master has died, she has nowhere to go or no one to turn to. She thinks it might be better to die, since she's got nothing left to live for anymore. Through the trees she could see something staring at her. That something is You.

Bellatrix: "Who-Whos there?"