The Gurongi has a three-part naming scheme that all members have, consisting of 'Group-Species-Creature type'. Only 48 out of the original 200 Gurongi appeared in the course of Kuuga's broadcast, though some of them were fought offscreen between episodes, and the other 152 were killed off by Daguva after his return for being 'unworthy'.

Unidentified Lifeform #B1 appears in only human form for the entire series outside of a glimpse of her hand or so. Gurongi seen in human form are labeled as 'B' ( Ｂ群, Bīgun), and each human-like Gurongi possesses a tattoo that resembles their true animalistic forms. Each of them possesses a strange artifact called Geburon on the belt-like (the buckle is called Gedoruto) parts in all of their bodies, no different than Kuuga's Amadam. They are referred by the Police as Unidentified Lifeforms (also known as 'ULFs') ( 未確認生命体, Mikakunin Seimeitai). However, by the present day, the newly resurrected Daguva revives his tribe from their rest and restart the Gegel on the human race, the descendants of the Rinto, to bring out the 'Ultimate Darkness' ( 究極の闇, Kyūkyoku no Yami), where they commit genocide towards humanity. The beings known as the Lords also protected the Rinto tribe.

Attacking their rival civilization the Rinto ( リント, Rinto), the original Kuuga defeats the leader of the Gurongi and seals all 200 of the Gurongi tribesmen away. This mysterious ancient civilization is made up of beings that can transform into monsters to kill people for their ruthless game ( ゲーム, gēmu), which is translated into the Gurongi language as the ' Gegel' ( ゲゲル, Gegeru).

5.2 Kamen Rider Agito & Kuuga Wild Battle.

Kamen rider kuuga growing form