physiology (n): biological science of essential and characteristic life processes, activities, functions; all vital processes of an organism.
Gene Simmons (1949-), Israeli-American rock bass guitarist, singer-songwriter, record producer, entrepreneur, actor, and television personality. Known by his stage persona The Demon, he is the bass guitarist/co-lead vocalist of Kiss, a rock band which more than 100 million albums worldwide.
narcissist: (n) one with an excessive admiration or love of oneself.