Latest update to the Super Smash Bros Brawl website certainly deserves it's own post: The devs have revealed that in game you can pick up an item called an assist trophy which will release a random non playable character do to damage to your opponents (kinda like pokeballs). The characters are not playable and presumably perform a quick attack before disappearing like Jump Superstars. Characters revealed so far are: Hammer Bros, Samurai Goro (from F-Zero) and a pup from Nintendogs. See links for pics. Will be interesting how many support characters make it!