Sorry, but no.
you can't.
You don't.
No, Rayquaza is a boss, not a playable character.
He is not a playable character, but if you have Homebrew, you can control him on Boss Battles ONLY
master hand isn't a playable charachter in ssbb but you can probably get him somehow if you use cheats
No. Tom Nook is not a playable character in Brawl.
Nobody knows. Nintendo might not even bother to make another Super Smash Bros game. Or, they can make a Super Smash Bros Brawl 2, and have every charachter ever created. Nobody knows. That is the future.
cause he is dumb (EDIT) uhm, dude meaning that waluigi is dumb doesn't mean he can't be playable in brawl
When you put the stickers on a charachter, their attacks become stronger.
no hes not but if you hack charizard into ridley then he will be playable
no. cloud is not a playable character.
No. Only Pikachu is available in Brawl.