This guy was always my favorite character in the series.
I just got D. I. Y. recently, and to be honest, I don't like his voice in that game. It sounds like the same character that was in the GBA games, but what I dislike is that I can actually understand what he says. Personally, I dislike that because he is an alien, and I liked it better when it sounded like he was talking in an alien language rather than hearing him talk in English. ...I don't have Touched yet, though, and it might be the same in that game too.
I do kind of like his stage though. It seems so weird, and yet so fresh.