Over at the official Marvel Ultimate Alliance 2 web page, lead animator Adam Olshan assuages players concerns that Carnage winds up just another version of Spider-Man or Venom.
We used the word “vicious” a lot when talking about how he should look. “Crazy” too, because of the background of who he is and what he is. I worked mostly on his basic melee combat. That’s when we really pay attention to how we can differentiate that character. Spider-Man needs to be agile & springy. Venom was more of a bruiser, like a huge jungle cat who attacks with lethal clawed swipes. For Carnage, we wanted him to feel as quick as Spider-Man, but as dangerous as Venom (or worse). We ended up with a very “slashy” character. Carnage is like a lunatic knife fighter: cutting people up quickly and messily, without much concern for how he looks doing it.
As of right now, all we know is that Carnage is coming to the PlayStation 3 and Xbox 360 eventually. Even though I have yet to pick this game up this is awesome news to me. Carnage has always been one of my favorite characters and I wanted him really bad in the first game.