Episode 40's credits have all the newly-introduced characters from 39 grouped together in the following order: James Kot, Daniel Doheny, Scott Roberts, Sean Thomas, Daniel Fong
Before taking a closer look at each actor's production history, the immediate assumption to make is that Kot is Kurt and Doheny (apparent second-in-command) would be Bisuke.
Looking ahead in the wikia, assuming the character list is complete, Bisuke does not appear in Episode 44. If there's an episode without any of Kurt's cronies you should have an ep with just Kurt's VA, and if only Bisuke appears and/or makes a peep (at least as opposed to the other 5 or so henchman) you should have him, too.
I am, though, going by the YouTube uploads. If the whole lot of them are credited for the remainder of the series this could certainly prove to be a problem. Personally, I'll wait and see how this pans out before I really dig into past roles (I tried Twitter at least; no dice).