That would be cool. I think Disgaea should have a stage. Perhaps Laharl’s castle, and you mix in Sly cooper maybe?
Well… technically he didn’t first appear on a playstation system… though neither did big daddy so they are throwing that requirement out the window.
I just thought of 2 more characters that would be great in this game.
Kat(Gravity Rush)
Spoiler
http://img1.lesnumeriques.com/test/69/6976/Gravity-Rush_Kat-Dusty_370px.jpg
Gravity Rush was… the most fun I had playing a game in awhile. Sure the combate wasn’t the best, but the characters, the other controls, the story, the setting, it really just sucks you right in. The story, while confusing at times, I really liked, and Kat is a great protagonist. You really get to know her and care about her as she grows and learns about the world along with you.
Her powers of gravity and her kicking abilities would make her a very fun and unique character. Launched herself at the foe, picking up objects, and people, and throwing them, her sliding attacks, and changing gravity so she can walk on the walls and ceiling would make her an excellent long range/keepaway character. She even already has 3 super moves she could use.
This series is obviously going to be a big franchise, and I think putting her in this game would help her popularity grow.
Gwendolyn or Velvet(Odin Sphere) or Lillet Blan(GrimGrimoire)
Spoiler
http://media.giantbomb.com/uploads/0/3009/914587-28_super.jpg
http://1.bp.blogspot.com/-n4y7_0aioGQ/Tl4AVoLMM6I/AAAAAAAAEKc/cOCOeLZDevk/s1600/120549.jpg
http://fc00.deviantart.net/fs70/f/2010/125/c/f/Lillet_Blan_by_nonoye.jpg
Vanillaware has only been making games since 2007, but the beauty and quality of the games are top notch. As a almost PS exclusive company, they would be a good choice. I had a hard time picking who should be in the game, so I choose the 1st 2 games they released, and the main characters from them. Odin Sphere has many, so I put the most well known 2. Gwen is a valkyrie, Velvet is a princess. Both use a good assortments of attacks. I think Item combining and usage should be a part of their game plan. Lillet is a witch in training, and she uses magic to summon minions to defeat evil monsters. Her game is a real time stratagy game, and I think that would be an very interesting playstyle in a fighting game. Perhaps she herself has very few attacks, but her goal is to keep away and keep spawning creatures to attack for her, protect her, and so forth.