Void, evil twin version of Stiles. Void, practically a possession of Stiles. Stiles has a twin sister named Hailey who’s a werewolf. She’s trying to save Stiles from this evil Void but she’s struggling with other things that might be affecting her from trying to save her brother from Void. Void is a 1,000 year old nogistune that loves to make people suffer, even the twins