I doubt these guys are even remotely aware of Komari's new powers, though, so it should be quite fun to see what comes next... :D
The one who said he's not human should have some powers of his own and might be bad news...
They all seem like vampires, yes, but considering how even Liberta was surprised by Komari's talent for using her powers after seeing the wings and tail, and with Komari having been successfully turned someone with blood as strong as Liberta's, and the demonstration we already had when she saved Liberta by moving faster than the explosion, I think it's pretty safe to say there are very few enemies, if any, who can stand against her if she gets truly serious.
Admittedly, there's always the question of whether she can pull this off right away, having still had very little practice... But in that case, I guess this may be why we got introduced to another interesting character in the previous chapter.