N·Daguva·Zeba[src] (ン・ダグバ・ゼバ, N Daguba Zeba) was the stag beetle-like lord of the Gurongi and main antagonist of Kamen Rider Kuuga. He was given the codenames Unidentified Lifeform #0 (未確認生命体第０号, Mikakunin Seimeitai Dai Zero-gō) as his Intermediate Form and Unidentified Lifeform B13 (未確認生命体Ｂ群１３号, Mikakunin Seimeitai Bīgun Jūsangō) as his human form.