No, you can only play as Fox in SSB, Fox and Falco in SSMB, and Fox, Falco, and Wolf in SSBB. Although, I'd assume you already knew that.
She is, but not as a playable character.
krystal is not a playable character in brawl
maybe maybe not.
No, Jack Skellington is not a playable character in Super Smash Bros. Brawl.
No. Naruto is not a playable character.
No, Pichu is not a playable character in Super Smash Bros Brawl
You don't, because the Mii isn't a playable character. The Mii, however, will be a playable character in the next Super Smash Bros. games, Super Smash Bros. for Wii U and Super Smash Bros. for Nintendo 3DS.
WALL-E is not a playable character in Super Smash Bros. Brawl. You are most likely referring to R.O.B.
Midna is not a playable character in Super Smash Bros Brawl
No he is not a playable character.
He is not a playable character.
No not in Super smash bros no