"Psh. Wuss." Sure, because anyone who suddenly has an explosion go off next to them should be completely prepared for it. Then again, Bakugo, being a walking explosion like that, is usually around people who do expect it. So he's a bit off his familiarity dealing with someone who isn't aware of his Quirk.

"Wow, you've got a working brain, Fish Face." Ignoring the fact he's also half fish himself right now. But that dry retort changes to a silent interest when Hythlodaeus coats his hands in ice and creates claws of frozen water. Nah, he wouldn't take this to be any threat or danger. It's showing off, just like he did. "So you don't have to say a spell or do some funky hand motions?"