N Group

The N Group are the most powerful of the Gurongi and serve as their leaders.

N-Daguva-Zeba
N-Daguva-Zeba (ン･ダグバ･ゼバ) is the stag beetle-like lord of the Gurongi and primary antagonist of Kamen Rider Kuuga. He is given the codenames Unidentified Life Form #0 (未確認生命体第０号) as his Imperfect Form and Unidentified Life Form B13 (未確認生命体Ｂ群１３号) as his human form.

N-Gamio-Zeda
N-Gamio-Zeda (ン・ガミオ・ゼダ) is the wolf-like king of the Gurongi in the World of Kuuga, also called "The Ultimate Darkness" (究極の闇). He refers to himself as otherworldly because he should have never been revived, a fact that even he seems to believe, wondering why he was awakened. He is sealed and the Gurongi are attempting to unseal him with a Sacred Gegeru, targeting five police women without spilling blood to revive him.

Though they obtain four kills, Tsukasa uses Ai as bait to lure the Gurongi out and gives her a nose bleed to ruin the Gegeru. The effects of the distortion revive Gamio anyways, and he uses his power to convert every human corpse within his Miasmic aura into a Gurongi. Although his ultimate goal is to have his sired Gurongi destroy each other, Gamio is destroyed by Kuuga and Decade performing a combo attack.