Hmm... That's Interesting... Really it is... But I think you're right... Because if it was Sento... The Build Driver would've said extra Stuff after Black Hazard's... ...I guess?. I keep using ''I guess'' for everything I speculate for some reason... Also, wonder why he hasn't used Hazard Attack yet... even though he's got Rabbitx2 and Tankx2 Forms now
He always uses Overflow in his regular Hazard forms (except KeyDragon) before doing a finisher. That's why there's no Hazard Attack in the show yet.