From The Grey House, Book Three, Protector of the Grey House:
The first demon bellowed and advanced on Vincent, who watched in terror as the other went for his woman. He had never seen these demons before and had no idea how to banish them. They were taller then he by a head and twice as wide. They were formed by broken pieces of mirror, glass, razor blades and what looked to be hypodermic needles. Their hands were all broken glass, with long bits acting as claws. Their mouths resembled sharks’ mouths, with row after row of needles. Their eyes looked like bent spoons. Vincent could see no flesh. The thing before him bellowed and he backed off, assessing the situation. Joseph was by his side, handing him a short sword, brandishing an identical one.