Uzuri(the pony guardian)

Uzuri is a mysterious pony that wears sunglasses and a doctor mask his cutiemark is a bloody heart he stays away from mostly everyone he loves to stay isolated. no one seen him in the daylight uzuri only comes out during the night to practice his magic he lives in a castle using his magic to keep the magic barrier up to keep everypony away from him so they can't see the ugly beast beneath his pony stature.