Circuit Breaker seems to only drain Meter on the first hit of the ground combo, on the last hit of the aerial combo and on tag in. It doesn’t matter if she’s in detonation mode, Robo Fortune only needs to equip a Circuit Breaker. EDIT: Headdrone hits and Fidget Spin also trigger the Circuit Breaker drain. I assume this is a bug because of the listed effects of an unleveled Circuit Breaker: “While in detonation mode, HITS reduce METER from all opponent BLOCKBUSTERS by 5%. Sacrificed 10% of your MAX HEALTH.” In the video I used an uninvested Robo Fortune equipped with an unleveled Circuit Breaker.