Genegarg was one of the many monsters affected by the Devil Splinters and turned berserk. Genegarg attacked the Land of Light and ate several Ultra Medals and the items needed to use them, as well as Bullton. The monster made its way to Earth where it was pursued by Ultraman Z and Ultraman Zero. During the battle, it released Bullton, who sent Zero to an alternate dimension.
When it landed on Earth, it encountered Sevenger, who joined in fighting the beast with Ultraman Z. At first, it defeated the both of them, but Z returned as Alpha Edge after bonding with his new host, Haruki Natsukawa, who was killed inside Sevenger. Z managed to defeat Genegarg, scattering the remaining Ultra Medals elsewhere.
During the aftermath when Genegarg made the collision course with Earth, it apparently woke up several kaiju that hibernated deep underground for sometime.
- Suit Designer: Kengo Kusunoki
- When Genegarg's temperature rises, it utters the slowed down cry of Mothra.
- Height: 67 m
- Weight: 60,000 t
- Origin: Space
- Powers and Weapons
- Energy Missiles: Genegarg can fire red missiles from the indents on its body. Its temperature raises when performing this attack.
- Energy Beam: Genegarg can fire a purple beam of energy from its mouth.
- Regurgitation: Like real sharks, Genegarg can regurgitate its stomach contents. These contents include an asteroid and a Bullton that trapped Ultraman Zero in another dimension.
- Flight: Thanks to the propulsion organ on its back, Genegarg can fly in both atmospheric and space conditions.
- Nasal Horn: Its head has a bladed horn, which it can use to attack with.
Ultra Monster Series
|Ultraman Z Kaiju & Seijin|
|Gomess | Sevenger | Genegarg | Bullton | Celebro | Neronga | Majappa | Bemstar | Segmeger | Windom | Guigass | Gomora | Telesdon | Erimaki Telesdon | Peguila | Zeppandon | Gilbaris|