Near the top of this page, there are a list of unplayable characters. Toad is one of them, but you can get Toad. First, you must do Classic Mode with any character, and at any setting. After you beat it, you go to the credits, and you have to hit every single one of the credits. Then you get to fight Toad and if you win, you get Toad. This is very hard, and it took me a really long time, but it ABSOLUTELY works.