Side character, like the ones outside the window? You were probably playing an earlier version of the game. Earlier iterations of the game had some AI place holders to meet deadlines (which I disclosed to my players), but we later replaced them with hand drawn art (the game is still a WIP btw, it is far from finished). But from the very beginning, all the visitors and the sex scenes have been hand drawn. Another example is the Hypnotist also being voiced with AI, but even that is going to be replaced with a human VA in the next update, we hired MommyEin. We are still putting in more effort into the game as we speak, in fact every single character will be at least partially voiced by the time we're done since we took on a publishing deal.