Source: comicvine.gamespot.com

4. Dr. Fate

(JSA, DC Comics)

Doctor Fate was crazy underrated, if only just because of his visual design. Look at that helmet, that was an all-time comic book design, right there. And the Ankh imagery? Ugh, so good.

Kent Nelson was an archaeologist who discovered the Helmet of Fate, an ancient relic that contained the mind and powers of ancient Egyptian magician Nabu. When Nelson put on the helmet, he became Dr. Fate, a blend of himself and Nabu (with Nabu gaining majority control).

That's one of my favorite things about Dr. Fate: he and Kent Nelson were two distinct people. They weren't the same guy. People who knew Kent were creeped the hell out by Fate, and people who knew Fate were uncomfortable around Kent. Kent Nelson wasn’t the only Doctor Fate, but he's my favorite, so he's the one we'll pick for this.

Honorable mention goes to Hector Hall, who served on the Johns/Goyer/Robinson JSA team and was also pretty great.