Sutitle: Dark Monster (暗黒怪獣 Ankoku Kaijū)
As they started to lose their invasion forces on U40, the Baders sent Bagon to attack the civilians taking shelter beneath the planet's surface. The monster, easily towering over the Ultra Warriors, destroyed the landscape with nothing stopping him. However, once Ultraman Joneus destroyed the Baders' battle station, he set his sights on the towering beast and proceeded to engage in combat. Bagon proved more than a match against the hero as despite Joneus's best efforts, the monsters was too large for his martial arts abilities to affect him and found himself tossed around like a rag doll even after using the Planium Ray on the titanic monstrosity. Joneus continued to persist as he eventually managed to grab Bagon and fly into the planet's orbit. Upon throwing him down, Joneus used the Planium Ray a second time with the aid of the planet's ozone layer to burn the monster up before crash landing with a cataclysmic explosion. Once the invasion was over and the threat of Bagon had ended, Joneus flew back to Earth to continue his mission of protecting the inhabitants.
- Height: 938 m
- Weight: 1,873,000 t
- Origin: Space
- Powers and Weapons
- Claws: Bagon is armed with three claws on head hand and two claws on each foot, all of which are ideal for grappling and shredding.
- White Flames: Bagon can exhale white flames from his mouth.
- Energy Resistance: Bagon has a high resistance, allowing him to withstand two direct shots of the Planium Ray with barely any damage.
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