Masumi Inou (伊能 真墨 Inō Masumi) is the Fast Adventurer Bouken Black (迅き冒険者ボウケンブラック Hayaki Bōkensha Bōken Burakku) of the Boukengers. His mecha include GoGo Formula, GoGo Crane, and GoGo Carrier. His Power Rangers Operation Overdrive counterpart is Will Aston/Black Overdrive Ranger.