He is the so-called Bad boy or Playboy of Sweet Amoris High School and is a headache for the headmistress, as the guy has a habit of not attending classes and being rude in return. He is a member of the basketball club and a member of the high school rock band along with his best friend, Lysander, and rival Nathaniel. It's not easy to get along with Castiel, and all because of his sarcastic personality and difficult nature. He gets irritated very easily and tends to get angry over trifles.