No, you won't be able to customize characters until the 3DS version comes out.
yes you can when you pick your character click on your character which is above player 1,2,3 or 4 then they should change colors
Shadow is not a character in Super Smash Bros Brawl, unfortunately.
What character?
No, Jack Skellington is not a playable character in Super Smash Bros. Brawl.
mewtwo is not in super smash bros. brawl however mew is a trophy character
Groudon is in Super Smash Bros. Brawl as a Poke Ballsummon, but not as a playable character.
No, Pichu is not a playable character in Super Smash Bros Brawl
Nope. Toad is not a playable character in Super Smash Bros. Brawl. Hope that helps.
No
No
yep!
sonic