I was able to dig up an old roster draft I did for Character Select 8. I didnt initially plan it to be the behemoth roster it was today even though the roster was still massive.

The early draft included

Mario

Luigi

Peach

Daisy

Rosalina

Bowser

Yoshi

Donkey Kong

King K.Rool (Newcomer)

Wario

Waluigi

Pirahna Plant (Newcomer)

Thwomp

Link

Zelda

Ganondorf (Newcomer)

Fox

Falco (Newcomer)

Kirby

Meta Knight

King Dedede (Newcomer)

Samus

Ridley

Pikachu

Jigglypuff

Mewtwo (Newcomer)

Captain Falcon

Ness

Marth *(Newcomer)

Inkling

Villager

Wii Fit Trainer

Pit (Newcomer)

Mega Man

Proto Man

Ryu

Ken

Chun-Li

Guile

M.Bison

Juri

Jill Valentine

Viewtiful Joe (Was on the base roster initially became DLC)

Dante

Batsu

Morrigan

Strider Hiryu

Captain Commando (Cut from the roster. Due to initially having too many Capcom Reps)

Sonic

Tails

Knuckles

Amy (Newcomer)

Eggman

Bayonetta

Nights

Kiryu

Pac-Man

Heihachi

Ivy

Yuri Lowell

Solid Snake

Simon Belmont

Alucard (Newcomer) (Originally on Base roster. But was DLC instead)

Stick Dude

Nerd

Wtf

Some lines

A pencil

Red ball

Red dot

Blue dot

Dot of Excellence

Dotette

Scribble

Homestar

Strong Bad

Coach Z (Initially on the base roster was DLC)

Strong Sad

Kenny

Cartman

Stan

Butters ( Was replaced with Kyle in the final version. Made it into 9 tho)

Shrek (Newcomer)

Donkey (Cut from final roster due to space)

Pico

Nene (Newcomer)

Bitey (Newcomer)

Cookie

Ninja Kitten

A nose