Werewolf

Werewolf, a Child who bears the soul of a wolf, born of a pactmaker who dreams of freedom. She won't listen to a thing anyone says, and loves to play pranks. Truly an untamed wolf. She appears out of nowhere, play pranks on the Master, and vanishes back into the shadows. When she finds a Child who has great reactions, she'll follow them around and constantly play pranks on them, but then immediately get bored. She's nocturnal, so she probably sleeps in the shade of a tree during the day. Or perhaps beneath a fence...