In this article, a poll on Sony's Facebook leaked both Nathan Drake and Big Daddy. Both characters were confirmed during Sony's E3 2012 conference.
The E3 2012 announcement that the game will be seeing a Vita release, and will feature Cross-Play with the PS3 version of the game. This will also feature cloud-saving between the two consoles, letting players pick up where they left off in single player from either the PS3 or Vita.
Big Daddy being the first Guest Fighter to be revealed, for one simple reason - No-one saw it coming. Suddenly speculation on Third Party characters went from those with ties to Sony, to any iconic character to have ever appeared on a PlayStation console.
Hardcore fighting game aficionado Seth Killian joining the PSASBR dev team.
DLC characters have been released...Emmett! Sweet! And who els-Kat?!?. YES. And they're going to be free for the first two weeks!!
So we've got two more characters for DLC. Who could they be? Oh, let's see here.... we've got Zeus. Looks good, even if we'll get a lot of fanboys bitching about how God of War now has two representitives... HOLY SHIT, ISAAC CLARKE?!!!
What's even cooler is that Isaac, like Big Daddy, is a harbinger of things to come: more fan-requested and completely unexpected characters to come around.
Let's not forget the MediEvil stage, which is mixed with Unfinished Swan of all things. You better believe Sir Dan's fans were happy.