He has a strong sense of justice, and will punish anyone he perceives to be a wrongdoer by transforming into an enormous, wrathful demon god. This demon god, known as a Daikaijin (大怪神, lit. “Great Mystical God”), bears a striking similarity both in name and appearance to the eponymous character of the 1966 tokusatsu film series Daimajin (大魔神, lit. “Great Demon God”).
Appearances:
- Manga: Haniwa-kun to Daikaijin) (ハニワくんと大怪神). Included in volume 4 of the 21-volume Digital Selection edition.
- 1968 anime: Episode 3; second half. Kaibutsu-kun to Haniwa Kaijin no Kan (怪物くんとハニワ怪神の巻). Also remastered as a theatrical version for the 1969 Toei Manga Matsuri.
- 1980 anime: Episode 30; second half. Haniwa-kun to Daikaijin) (ハニワくんと大怪神).
