The very confused doctor
Sterling has two very different personalities depending on his relation to a person he is speaking with. He is cold and logical around people he does not know very well, as well as those that annoy him. Around his friends and patients, however, he is very kind, if sarcastic. He has difficulty making new friends because of this.
Sarriv, the male Seraph which resides within Sterling's body, is a very curious and critical person, working to understand something before nitpicking at any inefficiencies or flaws.
Matches, tobacco pipe, tobacco, balisong
Sterling was and still is what many might refer to as a 'nerd'. Growing up, he had few friends. Sterling has always had a fascination with the human body, how all the carefully automated systems relied on each other for the continued survival of the brain. This led him to become a doctor. During his university and med school days, he had a borderline-obsession with balisong knives, during which time he collected them and learned to operate them both for show and self-defense. He has so far led a very successful career as a doctor.
Sarriv's history;to be revealed.