Vlastomil appears as one of the courtiers in the game, The Arcana. He as well, provides comic relief to the story. While Vlastomil is more evil than Volta, he still lets work slip up sometimes because of his obsession with worms. He is a big people pleaser, and always tries to be on the good book of whoever is in power, without putting much thought into it. I imagine Vlastomil's voice to be a tad bit on the deeper side, but also, maybe a little broken? Like the kind of broken we see when a guy hits puberty. Again, this is just an idea. If you look at his picture and think a different kind of voice would suit him, surprise me!