There are all sorts. Sonic is just helping categorize himself, really.

Felwinter nods. "Of course." His tone has barely shifted in the course of their conversation, not exactly monotonic, but with just the faintest efforts of inflection.

It also seems he's deemed his duty here over. He's investigated, he's imparted what he figures is important for a newcomer to know.

And then he's gone, turning and vanishing in a flash.