It appears that Gamerzines has come across a listing on imdb for the upcoming PlayStation All-Stars Battle Royale.
The listing notes that Uncharted protagonist Nathan Drake as well as Metal Gear’s Solid Snake. Those two characters are pretty much a given. One surprise (and welcome) addition is that of Kevin Buttler, Sony’s resident vice-president of everything awesome in the world of gaming.
InFamous protagonist Cole MacGrath was also listed, but he has been rumored for the game for some time. More characters have been promised for an E3 reveal.
(Via That Video Game Blog)