He cocks an eyebrow at her self-introduction. Granted, he had a fairly long and ridiculous title that he'd given himself, there was something that was particularly unusual about hers. Aside from the fact that it was rather short, yet quite quick to get to its point. Still it at least stuck out in memory as he decided that he'd just probably cut it down to a single word.

"Mercury, huh?" Kamina says it as if to test how it sounds coming out of him, nodding his head about the way a chef would as they decided that the dish the just sampled proved to be up to par.

And then that almost arrogant grin of his came right back, "Glad to have ya aboard then!"