New Super Mario Bros. U’s playable characters include Mario, Luigi, two Toad characters, and Miis. In the latest issue of Game Informer, Nintendo producer Takashi Tezuka revealed why other Super Mario characters, including Peach and Wario, are not playable instead of Mii characters. Compared to other characters in the series, Tezuka claims, Miis can show more expression and emotion on their faces.
“We did consider that when we looked at which characters we would use. We really came down on the side of using Mii characters rather than some of the characters you had mentioned. Through the technology of HD, you’re going to see more expression and emotion on the Mii character faces. Of course, we’re going to continue making Mario games, so you can maybe look forward to some of the things you were asking about in the future.”