Roidmude 041 was among the Roidmudes modified to be a member of the Reaper Legion created to replace Mashin Chaser as the "Reaper" of the Roidmudes.
041 accompanied the Medic Roidmude when they went to back up the Cook Roidmude in fighting Kamen Rider Drive. 041 was later used by Medic for her "Super Evolution Experiment", which involved Medic using Cook's "Honfleur's Dusk" sauce on him but rather than trigger any sort of evolution, the sauce caused 041 to begin to catch afire. 041 attempted to sacrifice himself to let Cook to destroy Drive and himself, but Heart stopped him and stabilized 041 to cancel the effects of the sauce on him.
041 was later sent alongside Roidmude 045 by Medic to attack Kamen Rider Chaser as he was chasing Cook Roidmude on his Ride Chaser. The two initially overpowered Chaser until Drive Type Formula appeared to assist him. Cook soon joined the fight as well, now enhanced with an arm cannon given to her by Medic as a reward for perfecting Honfleur's Dusk.
Deadheat Mach soon showed up too and alongside Chaser fought against the Reapers while Drive Type Tridoron battled Medic and Cook. 041 and 054 were beaten down by Chaser with his Across Breaker before Deadheat Mach destroyed with his Heat Kick Macher.