ラビットタンク ラビットタンクフォーム
[i]Rabbit! Tank! Best Match! Are You Ready?[/I]

The default form of sorts for [[Kamen Rider Build]]. Utilizing the [[Rabbit Fullbottle]] and [[Tank Fullbottle]], Build transforms into a balanced form with [[red_eyes|red]] and [[blue eyes]].
 
[i]Hagane no Moonsault! RabbitTank! Yeah![/i]
rabbit+tank form