MadRogue's black, white and purple-coloured primary Evol Match form, themed after a bat, an engine and steam, accessed using the Bat and Engine FullBottles in the Evol-Driver. This form is powerful, beating out Grease, Rogue, and Build's RabbitRabbit Form. In this form, MadRogue is armed with both a Transteam Gun and a NebulaSteam Gun, as well as the Steam Blade. Additionally, if the user inserts a regular FullBottle into the Evol-Driver alongside the Rider EvolBottle, they can summon the weapon of the corresponding form. This form debuts in Episode 38 of Kamen Rider Build.

Male Template and Build Driver asset by