Have you played this?

[Moonlitsun]

If you haven't I recommend you do
The game here is called M.U.G.E.N a fully customizable 2d fighting game for your PC. Fully customizable meaning you add your own characters Music tracks stages and Overall look of the game Using something called Screen packs
Original game:

After Customization:

Not only can you add ANY character you want but you can add as many as you want

It is already Fully Equipped with Arcade, Survival, Team, Team co-op, Team survival, Practice And Watch modes.
Just to fully sell you on the game heres the gameplay



The best part is its completely free!
SO WHAT ARE YOU WAITING FOR DOWNLOAD TODAYYYY
requires Windows XP or higher