Didn't where else to put this other then in this forum. The post says the game will include at least: Parappa the Rapper, Kratos, Sly Cooper, Nathan Drake, Sweet Tooth, Colonel Mael Radec, and a Fat Princess. Source.
Rumor: Is Sony making a Smash Bros. style game?
This edit will also create new pages on Giant Bomb for:Beware, you are proposing to add brand new pages to the wiki along with your edits. Make sure this is what you intended. This will likely increase the time it takes for your changes to go live.