It'd be cool if he were hired as a stuntman in a motion capture suit. As for voice over... depends on the character. As Sofaman said he was dubbed over during his role as Darth Maul because his real voice didn't suit the character. For an example of his actual voice just watch his performance as Toad from X-Men. So Park's voice _might_ be suitable depending on what the character's like. Although Park isn't much of a performance actor, which is why he typically gets few lines - and you need good acting skills to do voice over work IMO. Still, his character may only have a brief role (can't be much briefer that Jolt's!)