Hey Ryce, following your 3DS character select screen deduction, I was wondering if I could do it myself on the
Wii U version, but there's one thing that's bugging me--Greninja is listed before Pikachu. Compared to every other series in both versions that makes no sense. Either Greninja will be to the left of Pikachu, which would be odd, or the Pokemon characters aren't going to be arranged in one neat little row like the other series seem to be.
Though I think I figured it out to be four rows of twelve though. The top row probably goes:
Mario - Luigi - Peach - Bowser - Rosalina - Yoshi - Donkey Kong - Diddy Kong - Wario - Chorus Men - Samus - Zero Suit Samus
I think. Samus and Zero Suit Samus I am certain are in that first row, because that would explain why they are listed before the Zelda characters on the Wii U version instead of after like in the 3DS version.
Second row probably starts out Link - Zelda - Sheik - Ganondorf - Toon Link, though beyond that I don't know.