User blog comment:ZLouieV/Young Justice: Invasion discussion/@comment-4970261-20120412064757/@comment-1038387-20120412110639

Probably the era in which he was created. Hal Jordan did not get a nice ending (as in, went mad and destroyed the Green Lantern Corps) and Kyle was THE CHOSEN ONETM to replace and defeat him. He had a pretty lame origin (went out clubbing, and half drunk in a dark alley, a flying blue midget (Ganthet) gives him the ring.)

Hal is an arrogant pilot who has an excellent (from a stroytelling point of view) love/hate relationship with Carol Ferris/Star Sapphire. The Hard Traveling Heroes era with Green Arrow was phenomenal.

Guy is an asshole, but a good teacher (something that only pops up now and then, unfortunately). Even as a Vuldarian war machine (don't ask), he's badass asshole. Plus, he was in the Justice League International where he was Batman's perennial punching bag.

John Stewart is an architect (and thanks to the DCAU, also a marine). He was the first to go public, even married Katma Tui (but Carol/Sapphire killed her), and then Cosmic Odyssey happened, in which he lost an entire planet because of his arrogance. It's made him a better person. I can definitely recommend Cosmic Odyssey. Mosaic World, not so much.

Kyle is an artsy type, the only major thing that has happened to him is that all his girlfriends die. And he gets to sob about it.

(Bonus: Alan Scott was the original. Haven't read much of his Golden Age stuff, but as part of the JSA, he was pretty good. He was good (whole it lasted) in Checkmate too.)