Kurogane Spanner is an alchemist who transforms into the masked warrior, Valvarad and later Kamen Rider Valvarad.
Valvarad
ヴァルバラド
Stunt actor:
Uses the Valvarusher with RideChemy Trading Cards to transform and change forms, which are known as Customs.
Valvarad's name is a combination of the words valve and rad, with latter being short for "radical".
Transformation via GutsShovel Card and GekioCopter Card set into the Valvarusher.
Strikes the enemy with the Shovel Berserk on his right arm.
Uses the Copter Berserk on his left arm to fly.
According to the TV Asahi website, Valvarad is not a Rider but rather, a warrior whose suit and armor are designed by Spanner himself to fight the Malgam.