I'm not happy with caucasian cast members let alone Zac Efron to do any of the characters in Akira. I could understand Goku being played by a white person in DB Evolution since Goku was an alien from another planet in the anime/manga, but in Akira's anime/manga, almost everyone there was Japanese, including Kaneda and Tetsuo. Plus the setting was of course in Tokyo, so it doesn't make sense in context and story to cast caucasians in this movie. This kind of movie needs asian actors.
Unless Zac Efron is gonna squint his eyes all the time to TRY to look asian.