sean

Okay these are the definate secret characters in Brawl:

Lucario
Ness
Jigglypuff
Marth
Mr Game and watch
Luigi
Falco
Ganon
Young Link (Wind Waker)
R.O.B
Captain Falcon
Wolf

Don't believe me? http://www.serebii.net/index2.shtml

look a little bit down on the page and you'll see a bubble thing that says show picture click it and it will come up with a character roster from the japanese version of the game