Horrorman presents as a skeletal figure with exaggerated, protruding kneecaps and cheekbones, perpetually showing his teeth. He wears a long, tattered purple shirt featuring crossed bones on the chest. He stores a bone boomerang within his ribcage, which he removes and throws as his signature weapon.

Despite his fearsome look, his personality is happy-go-lucky, clumsy, and easily exploited. He persistently seeks learning from others but rarely succeeds. His deliberate attempts to scare people usually fail, though he sometimes frightens others accidentally. He frequently uses the verbal tic "hora."

He works alongside Baikinman but doesn't consistently engage in villainy. He harbors an intense, unrequited obsession with Dokeen, persistently gathering flowers or food to impress her. In a 2007 film, a character named Hora Horako appears, claiming to be his daughter and suggesting he was once a prince; however, Horako's reliability as a narrator is questionable, casting doubt on these claims about his past. A 1991 film depicts him as a mentor to Chibigon, though this specific backstory remains confined to that movie.