Zu-Gooma-Gu is a vampire-bat Gurongi who is a member of the Zu Group. He is given the codenames Unidentified Life Form #3 and B2
Kamen Rider Kuuga
Among the first Gurongi to appear in Nagano, the photosensitive Gooma commits vampirism on five humans in a single night until sunrise where he murders the preacher Father Jose and dons his attire to use the Church as a base of operations. He managed to overpower Kuuga until being driven away by the headlights of a police car. When Ichijo uncovered the truth, he battles Gooma as the church is set on fire and Yuusuke assumes Mighty Form for the first time.
However, though he had the advantage with Zu-Gumun-Ba's aid, Gooma retreats when dawn occurs. Later donning a black trench coat and fedora to protect himself from direct sunlight, Gooma was temporary removed from the game as a result of the Zu losing the right to play and becomes Ra-Baruba-De's underling. However, flying from Tokyo to the site of Gurongi burial grounds in Nagano, Gooma found a discarded piece of N-Daguva-Zeba's body and had the item refined before using it on himself to evolve to a state where he can now resist sunlight and assume Strengthened Form.
But the evolution increased Gooma's blood-lust as he actually attacks Baruba to force Daguva's location out of her with the intent to kill Daguva and get all his power. But when Go-Gadoru-Baoverwhelms him to cover Baruba's escape, Gooma is forced to retreat as the final stages of his evolution take effect. Now able to assume his Ultimate Form, Gooma goes on a killing spree in Chiba to slaughter as many people as he could before Daguva comes for him. But Kuuga arrives to fight him in Titan Form as Ichijo uses a device specially made to disrupt Gooma's via sound waves.
But Gooma manages to destroys the device and was about to kill Kuuga when Daguva finally arrives. He runs off to fight Daguva, only to be slaughtered by him with his corpse found by Yuusuke and Ichijo as it is taken for medical analysis, leading to the development of the Nerve-Breaking Bullets.
Movie War 2010
Gooma (in his final form) was part of the group led by Colonel Zol who witnessed the revival of the Super Crisis Fortress. When a newly revived Tsukasa, Natsumi, Yusuke, and Kaito arrives, he fought Kamen Rider Decade until Kamen Rider Diend finishes him with his Final Attack Ride in an exchange finisher.
Kamen Rider Fourze
Gooma, in Ultimate Form, was one of a trio of Gurongi (with Zu-Zain-Da and Me-Badjisu-Ba) who were seen fighting Kuuga in new video footage that Tomoko Nozama found on the internet, along with other clips of past Kamen Riders, who are now known as urban legends.
- Gooma's original form.
- Using a piece of Davuba's body, Gooma advanced into Strengthened Form. In his sun-resistant state, Gooma's skin is darkened and he grows long brown hair.
- His most dangerous form, Ultimate Form gives Gooma an light armored body with his long hair turning white.