Yes, it is possible to unlock all characters in Super Smash Brother Brawl. Please refer to gamefaqs for a detailed list of unlockable characters and how to unlock them.
toad is not feature in Super Smash Bros! in fact! Peach is shield with toad!
Koopa is not an un-lockable character in Super Smash Bros Melee.
Blaze is not a playable character in Super Smash Bros. Brawl, just a trophy.
Not a character.
Toad is a character from the Mario games. It is not possible to unlock him in Super Smash Bros Melee.
he is not a character in this game
As a playable character, no.
Nope. Raichu is not a playable character in Super Smash Bros. Melee. Hope that helps.
Nope. Daisy is not a playable character in Super Smash Bros. Melee. Hope that helps.
Conker is not a Nintendo character and is not featured in any Super Smash Bros. title.
Shadow in not a playable character in Super Smash Bros Brawl; he is only an assist trophy.
Crash Bandicoot is not a playable character in any Super Smash Bros. game.