He is tall and muscular man with spiky long white hair and large pale purple eyes. His face and body are covered with scars. He is abrasive, hot-blooded, rash, and stubborn, often times impulsive and quick to lash out. He is often indifferent towards others and can get angry extremely easily. he harbors a deep hatred towards demons and is convinced that humans and demons can never coexist. Sanemi's cold, rude, and dismissive behavior is the result of losing too many people he cared about.