I wonder if you can use synthetic voices, like Siri or that Japanese vocaloid girl with blue hair. Train the vocaloid AI using voice clips from the show and you have a knock off VA.
As sketchy as synthesizing VA's are to make robot voice them (like what Disney did with Hammill in one of the TV Star Wars where they used an AI learning to voice his CGI cameo appearance), I am really a sucker for going the whole hog and trying to use voice clips from a show to use them as porn voices. I much prefer it to hiring a porn VA that sounds literally nothing like the character in question.
But I don't think I've seen anyone top Zone in this department. That Modifuckers video Zone made only had one pilot episode to pull from, so what they did is find voice clips from OTHER SHOWS that the VA voiced that sounded close to how the characters sounded.
All that plus making the voice clips not feel stilted and sounds natural and flows well that it feels like a part of the video and not spliced from an episode? That's actually talent.
