Sal.Paradise on 28 April 2012
Going by the Michael/Long Live Play teaser: (and it was just a teaser, nothing was announced or unveiled etc...so maybe?)
It features:
Helghast character + ISA soldier + Arc Lighnting Cannon
Sweet Tooth + his truck
Metal Gear Mk II from MGS4
Parappa the Rapper
Sackboy + Items from LBP
Lighnting + Lightning's sword
Ratchet + his Omni Wrench
Resistance Chimera + an Auger
Nathan Drake (chatting up Lightning 
)
Cole
Isaac (Dead Space)
Ghost (MW2)
Agent 47
Old Snake
Joe Mauer from MLB the Show's cover
Chell + a Portal
Kratos + Athena
Paul from Tekken
NCAA football player
A Little Sister
Ezio
