You know how it is, once a beta begins and files appear to the public there are always some people who will literally tear apart that data piece by piece until they learn everything possible about the game they are going to be playing. Well it just so happens that a whole slew of NeoGAF users have done this with the PlayStation All-Stars Battle Royale beta and boy have they found a lot of information.
It is worth noting that this could all be entirely false at the moment as Sony has not said anything about any of the information leaked, but some of the revaled information include fighters such as Dante from Devil May Cry, Spike from Ape Escape, Raiden from Metal Gear Solid, Sir Daniel Fortesque from MediEvil and Nariko from Heavenly Sword. A BioShock Infinite stage will also be included in the final product apparently.
The full list of leaked characters, stages, items and even support characters can be seen below:
Support Characters (Minions)