"Mario
Luigi*
Peach
Bowser
Rosalina*
Link
Zelda/Shiek
T.Link*
Ganondorf*
Kirby
KingDeDeDe
Meta Knight
Pikachu
PokemonTrainer
JigglyPuff*
Mewtwo*
Lucario*
Fox
Falco*
Wolf*
Ness*
Lucas
Marth*
Ike
Chrom*
Yoshi
Wario
DK
Diddy
Dixie
Captain Falcon*
Pit
Palutena*(Not the Exact Same design from KiU..Somewhat new)
Samus/ZSS
MegaMan*
Sonic*
Pac-Man*
Villager
Wii Fit Trainer
Some Guy From Xenonblade..I Don't really know about that series but the name was Shulk?*
Olimar
Alph*
Mii* But it showed A Mii Sign (I think It's like how Mario Kart Wii was when you choose your Mii) Next too Mii was the Random Select.
IceClimbers
Mr.Game&Watch*
R.O.B*
Little Mac
Wonder Red*(Wonderful 101) I was shocked when I saw Him haha
-Basically A 48 Character Roster In this game
-I Don't Know anything else... I'm just going by the Roster I seen
-When I seen the Roster I asked these Questions... 1. Who are the Hidden Characters? 2. Why they added Alph? Why they cut Snake and Not Wolf or ROB(didn't like those 2 haha)
- 1. He told me the Hidden Characters so i Put (*) next too there names
- 2. He Thinks Alph Was chosen Because he was the Main Character Of Pikmin 3 (He Uses The Rock/Pink Pikmin) Some Moves are Similar too Olimar
-3. He doesn't know a Reason why Snake was cut. He thinks Snake may be Playable In PSAS in the Future.
I Don't Know when these Characters will be revealed too People. Also He had a Japan Copy of this Game (We live in America).
-How This all happened? Long Story Short: I went too Visit him(cousin) He told me He has a Game to show me. When I Ask what was it I Didn't realize It was the Character Select Screen Of Smash Bros Wii U. I thought it was a Hacked Screen. I asked can I see other stuff to it He Told me wait till it's released. He Chose The Random Select for Stages Fast after we chosen our Characters (I chose Alph, He chose Samus) & Ended up On Battle Field But I wasn't Paying attention to the Stage Select screen. This was the Only match we played..Didn't use Items
-He Showed me Cause he knew I was a Big Super Smash bros Fan Since N64. After I look threw the Roster It was a tough decision to pick a character Since I only could play 1 Round.
-I decided to tell people here cause I been viewing this as a Guess since Brawl Released(Had the Japan version of that Too) I don't know any other Sites who'd care As well Just got on here to see how to unlock characters Back then wasn't really Into Forums. But Believe me or Not you guys will be surprised When it Releases! I'll Get more Info On the Game soon I'll ask him more Questions.
Source:
http://www.gamefaqs.com/boards/633202-super-smash-bros-for-wii-u/68526248