Also known as: ラビットタンクハザードフォーム
Rabbit! Tank! Super Best Match! Are You Ready?
A further powered-up form of Kamen Rider Build accessed by attaching the Hazard Trigger equipment to the Build Driver. Prolonged use of the Hazard Form causes the user to lose control and become a mindless, unstoppable force of destruction.
UNCONTROL SWITCH! BLACK HAZARD! YABEI!