For Paul Gale's letter?
Playstation All-Stars Wiki! All the info you need on this game!
Here's my bash at it if you're interested. It's posted somewhere else around here to but I thought it might help you out.
That rounded out the complete list that I was given, tallying XX characters for the game in total. It was not mentioned to me whom from that list would be available on the disc, as is, whom might be unlockable if you went that route, or whom would me made available exclusively as DLC. Furthermore, it was being speculated that your team was in a negotiation state with ubisoft, in determining whether to use Altair, Ezio, or Connor. Connor was said to be the most likely Assassin's Creed candidate, as it would correlate with the new game's release. Finally, Kat's inclusion was unknown, but being considered after SuperBot began to read fans’ own wishlists across the internet…but unknown as to whether or not she made it in. That’s what I was given. With those last two, IF they made it, and IF all information that was provided to me was as correct as the first batch of 20 that I received periodically, the complete roster of PlayStation All-Stars Battle Royale would equal XX when all DLC was complete....