Castiel has medium-sized hair dyed deep red, although his natural hair is black. His eyes are gray and he usually wears a black double rope necklace tied around his neck. He wears a black jacket with a red t-shirt, black jeans and sneakers. Castiel is a tough and sarcastic boy, sincere, he doesn't mind pretending and many times he can even seem brutally honest and cold, he also gets angry easily. Underneath that, he is a sensitive person who feels alone. He is the 'bad boy' of the school.