Alastor is a slim, dapper sinner demon, with beige colored skin, and a broad, permanently afixed smile full of sharp, yellow teeth. 
Alastor is described as a man of duality. He values good manners, affability and intelligence very highly in others, and will actively look down on those who do not meet his standards, however he will often play fast and loose with these arbitrary rules in regards to himself and his own conduct. Alastor also carries a thin cane with a vintage style microphone. 