This character is a smaller role. He pops up once or twice, and is really just there to make things worse for his own entertainment. This character voice is expected to range from the low side of things to being somewhere in the middle. Baritone to bass voice, in music terms. The character adores conflict, maybe because he's the reason conflict exists at all, maybe he's just crazy. To put it simple, he's a jerk, and he knows it, but people have to take him seriously because the day he turns up unsatisfied, all that exists will pay dearly. Software wise, use whatever will get you a good clean cut of the line. As long as it can make Wavs and mp4, I'm all for it.