ラビットタンクハザードフォーム
[i]Rabbit! Tank! Super Best Match! Are You Ready?[/i]

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.

[i]UNCONTROL SWITCH! BLACK HAZARD! [b]YABEI![/b][/i]
rabbit+tank form (black hazard)