Alongside Roidmude 088, Roidmude 042 assisted the Iron Roidmude in his spree of attacking athletic people to obtain data for the perfect human form.
When Shinnosuke confronted the Iron Roidmude, Iron summoned Roidmude 042 and Roidmude 088 to assist him. The three Roidmudes beat down Shinnosuke until Kiriko showed up and distracted the Roidmudes, giving Shinnosuke time to transform into Kamen Rider Drive. As Drive, Shinnosuke drove off the three Roidmudes.
042 and 088 attempted to attack Drive, but Drive equipped Funky Spike Tire and overpowered both of them, destroying 042 with a Spike Tornado attack.