Gorou Joe is a boy who lives a carefree life in the small historical town of Gujo Hachiman in Gifu prefecture. One day an old self-professed "water fairy" appears in front of Joe, and tells him to help people, and grants Joe the power to turn into "GJ8 Man" (a pun on Gujo Hachiman, as the number 8 is pronounced "hachi" in Japanese, and the "hachi" in "Hachiman" uses the kanji for the number 8). (Source: ANN)

Anniversary recaps of GJ8man. The recaps aired on the exact day as their 1st episodes of the seasons of the previous year (albeit the seasons are 12 eps long even though there is no break in airing and the ep count continues like normal and the show is a monthly release). The recaps are done in a variety show style where the GJ8man main cast watches clips of the show and gives commentary.

A series of short, 30-second segments featuring Gohan Kaijuu Pap and various "side dish" monsters to produce delicious meals.