It seems that every genius in the Marvel Universe undergoes some sort of horrible accident and becomes a superhero, or, is born a mutant/creates his own superpowers. Mr. Fantastic, Beast, Tony Stark, Bruce Banner, Hank Pym, et cetera: All are the top geniuses/scientists on earth. Peter Parker was brilliant enough, as a teenager, to invent web-shooters. (A fortunate coincidence that he was also bitten by radioactive spider, rather than, say, a rhinoceros.)
So: Are there any geniuses mentioned in the Marvel Universe that don't have superpowers? Just a normal, run-of-the-mill, super genius. Doesn't fight crime, just publishes papers, teaches classes, and so on.