I'm only good at SC and I do well with Lizardman. Interestingly almost no one else who plays likes this character. I think he rocks.
I used to play a lot of MVC2. I'm not great but I did come up with a nice Team with magneto, Spiral and Tronbone. If you can hold off Magneto for a while and build up your super bar to max, then bring him in, use the grapple and three way super. If you're lucky Tron's "Marching band of doom" will know most opponents to 1/4 hp. My buddy had an evil combo with Iron man, war machine and Dr. Doom...there three way super will pretty much kill you if don't block. Even if you do, it takes away about 1/2 your HP!
I like DOA a lot, i think it takes the fight game up a notch to include reversals. I like to play Helena and Tina mostly. But i'm pretty average at that game.
So are any of the H!P fighting games working these days?