Karma has pale skin, short red hair, and pale sharp eyes that appear as either mercury or goldish in color. Behind his usual innocent-looking, smiling face hides a torturous and rather sadistic personality. He has a slender build and has also been shown to have exceptionally sharp canine teeth.

Among all the Class 3-E students, Karma is the only one to wear a black blazer as opposed to the standard school-issued uniform. In the anime, Karma is considered to be the most physically attractive