Alongside his fellow Roidmudes, Roidmude 055 presumably took part in the Global Freeze and Roidmude uprising, though his location during the events is unknown.
Alongside Roidmude 012, Roidmude 055 joined the human terrorist organization Neo-Shade and assisted in their goals by planting bombs around the city. In response to this, the three Kamen Riders of Special Investigation Unit. raided the Neo-Shade hideout. While Neo-Shade's leader Keisuke Okamura escaped, 012 and 055 stayed behind to fight off the Riders alongside the human members of Neo-Shade. During the fight, 012 was destroyed by Kamen Rider Mach.