The Witcher 2: Assassins of Kings
Early on in Assassins of Kings you can find the remains of another type of assassin. We're still waiting for Geralt to meet an untimely end somewhere within the Assassin's Creed universe.
Dead or Alive 4
There wasnt a whole lot to recommend the lackluster 360 continuation of Dead or Alive - unless of course youre a big Halo fan, in which cast the opportunity to thrash the other, less armored characters as Nicole (a female Spartan created for DOA4 by Halo dev Bungie) was probably irresistible.
OK, this is another one thats more of a "costume" than a "cameo." But so long as you cant see his face behind that space-engineer armor, whos to say that its Dante and not Dead Spaces Isaac Clarke whos actually doing all the killing?
Seeing as how Chrono Trigger was (and still is) one of the most beloved games on the Super Nintendo, it should come as no surprise developer Square decided to add in a little nod to the past by including wizkid Lucca in Xenogears. Lucca has a fascination with robots, after all.
Psi-Ops: The Mindgate Conspiracy
This unlockable skin, meanwhile, is unmistakably Scorpion from Mortal Kombat. All arguments of it being a costume aside, who the hell else would leave their house in this ridiculous getup?
Metal Gear Solid V: Ground Zeroes
"To say he's a critical VIP would be a massive understatement."