Grease's silver and gold-coloured extra final form accessed by inserting the Grease Perfect Kingdom adapter into the Build Driver, known as Farmers Festival. This form is themed after a robot, a castle, a stag and a owl. The FullBottle and adaptor for this form was created with Phantom Liquid, unlike with other devices used by Grease, which use Nebula Gas. This form debuts in Kamen Rider Build NEW WORLD: Kamen Rider Grease.

Male Template and Build Driver assets by