I allmost voted Green Lantern, But in trueh, it's not so much Green Lantern, as it is Hal Jordan. He's diverse, he's Brave, and most importantly, he's not perfect. He still comes across as human. Talk about Diversity.
From Test Pilot
To Super Hero Green Lantern
TO Super Villain Parallax ( yes, I know there was a yellow fear-thingy in him, but COME ON, he allmost succeeded in unmaking reality!)
He then Dies, and is Later returned to the land of the living as a ghost in the form of the Spirit of Vengance, the Spectre!
And recently, He is reserected, and resumes his Mantle as Gren Lantern, and helps to rebuild the Corps, whic he destroyed.
Hal's the man.