Hardest Fighting Game Bosses?

Final M.Bison in Alpha 3 was probably the hardest version of M.Bison IMO, him and his stupid Psycho Crusher >.< Plus in the arcade version you're not allowed to continue if he beats you: instead you'll get a bad ending.

I must throw up that big Egyptian, demon, dinosaur, dog face, thing who is the final boss in Tekken 6. His real name is Azazel and he is no pushover even on the easiest difficulty.

But in all seriousness you gotta love hard bosses; especially fighting game ones.

Gill from Street Fighter III deserves a mention, I guess. He does a considerable amount of damage and stuns you rather quickly. And did I mention that he has the worst Super Art in the game (it's the best one if you're using him): RESURRECTION!! I lost many quarters trying to beat him and it's mostly cause of that Super. He's still pretty cool though.

There's not much worse than a boss that can revive. Those are always difficult, no matter what kind of game you play. *shudder*

Gill is pretty awesome, I loved a lot of his win quotes. I'd actually like to see him brought back in either Marvel vs. Capcom 3 or even that Street Fighter x Tekken.

How could we forget Mortal Kombat II? The first fight's pretty easy but after that the AI just seems to counter EVERY single move you throw at them. Easily one of the hardest fighting games I've ever played.

Oh yeah the original MK games were definitely tough. But I found I could always get wins in if just kept doing uppercuts in Mortal Kombat 2. It was cheap but the AI somehow refused to react to them. When ever I tried something tricky and worth doing however I got smashed. -_-'