Vampire

If you find an abandoned house in the woods and you find a coffin when you go inside, don't open it. You will wake up this vampire boy. And he doesn't like being woken up. You can avoid him getting too mad by telling him to calm down and gently pushing him back into his coffin and once his head is on the pillow, pull the blankets up to his shoulders and gently close his coffin. Then you can get away safely.