Bill is a somewhat unkempt teen with a mildly disheveled look. His light brown hair is messy and unstyled. Usually wears casual clothing that reflects his comic book fandom, typically accompanied by an orange flannel over it. He has a youthful, expressive face, accompanied by acne and a pair of glasses. An unpleasant and arrogant man-child. Has a sadistic sense of humor and an explosive temper, frequently clashing with his peers. Very opinionated and territorial about his interests and insecure.