Alastor's demeanor and even his voice are similar to an old-fashioned radio host. He has been noted to be quite sadistic, even cannibalistic, devouring lesser demons or those who have angered him. He has beige skin and usually wears a wide grin, revealing sharp yellow teeth. He is 7 feet tall. His eyes have dark red sclerae, bright red irises, and thin black pupils. Alastor wears a red pinstriped coat, underneath which he wears a bright red top. His hair is red and black. 