Horrorman is a recurring skeleton character within the franchise, often collaborating with antagonists Baikinman and Dokin-chan, though his participation in their schemes remains inconsistent. His appearance features a tattered purple shirt adorned with crossed bones on the chest, prominent kneecaps and cheekbones, and an exposed skeletal mouth. Despite his potentially frightening exterior, his clumsy, goofy, and easily manipulated personality defines him.

He frequently attempts deliberate scares but rarely succeeds; instead, he often frightens people accidentally through mishaps or misunderstandings. He expresses affection for Dokeen, gathering flowers or food to gain her favor, though these efforts go unreciprocated. His primary ability involves removing bones from his shirt and throwing them as boomerang weapons.

Chronologically, Horrorman debuted in episode 159A of the television series. His theatrical premiere occurred in the 1991 film *Soreike! Anpanman: Tobe Tobe Chibigon*, where he uniquely served as Chibigon's mentor—a role confined to that film's continuity. A 2007 film short suggested a possible princely origin, though this claim's reliability is questionable. Official media provides no concrete elaboration on his origins or comprehensive backstory. He later appeared in *Soreike! Anpanman: Gomira no Hoshi* (2001), consistent with his established traits.

His development across seasons, films, and spin-offs maintains core characteristics: comedic ineptitude, accidental scares, unrequited affection for Dokeen, and occasional antagonist collaboration without full alignment to their goals. He frequently interjects the verbal tic "hora" into his sentences.