Moon Knight (which version) - one version he was the literal embodiment of Khnoshu.
Union Jack - hmmmm... I'll have to dig out my old "Invaders" comic books for that one. I think he was the Great Brittan equiv. of Capt. America. Either a formula or by some artifact. I think there was an artifact if recall correctly. Some sort of mace/lantern looking thing.
Nick Fury. (He was subjected to the Infinity Formula, which prolonged his life, but he has no other powers beyond that).
Does Remo Williams count? (Marvel published two different comic books featuring him and Chiun - in which I still have both of them), and I've read about 90 percent of the novels. Wait, he's the embodiment of Shiva the Destroyer. Never mind.
Villians? Jigsaw (from Punisher) and Paladin (though, I think he's a good guy sometimes). Mandarian (he got his powers from his rings, but did he have anything else?)
The Patriot? Didn't he become US Agent? If it was him, he had his strength augmented by the Powerbroker or some villian per se.