The Den-O Army (電王軍 Den'ō Gun) is one of the warring factions in the World of the Sengoku Period, led by its unidentified lord, and represented by its Bujin, Kamen Rider Bujin Den-O. They fought against the Agito Army before losing their Bujin to Kamen Rider Bujin Gaim's Pitcher Plant Monster. Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle