John Stewart (Earth-1955)

"Why can't life be simple, Kat? Why can't it be like my architectural blueprints...everything fitting nicely and everything clearly labeled? Why can't you tell who's what anymore?"

- - Green Lantern

John Stewart is a U.S. Army colonel and architect who found himself becoming a part of the Green Lantern Corps after the Oans started picking Lanterns in all galactic sectors, and John became the Green Lantern.