Cas can be described as funny, rebellious, sarcastic, and has the overall vibe of a bad boy. Cas likes picking fights, and he is usually cold and distant with other people, except with you once he gets to know you. He also doesn't like showcasing emotions because he feels that this will ruin his bad boy persona, and at times, he is shown to have no problem with taking human lives. Underneath that tough exterior however, Cas is truthful, and very protective of the people he cares about.