Bio: John Stewart is a veteran member of the elite Green Lantern
Corps, an intergalactic peacekeeping force founded by the Guardians of
Oa. The Guardians provide each Green Lantern with a power ring that must
be recharged every 24 hours from a lantern-like power source. Acting as
the ultimate defensive weapon, the ring responds to mere thought and can
project powerful laser-like beams or impenetrable force fields. Its
emerald aura also protects the wearer from the harsh environs of deep
Years ago, the Guardians of Oa recognized John Stewart's potential for
exceptional courage and heroism. Awarding him a power ring, they trained
him to be the Green Lantern for Sector 2814, a quadrant of the galaxy
that includes our own solar system. For more than ten years, John has
patrolled the deepest reaches of space.
Now, he has returned home to protect Earth as a member of the Justice
League. Unfortunately, the hard-nosed military attitude that makes John
an ideal Green Lantern often creates friction with his fellow Justice
Leaguers. Because he views himself as an authorized professional
peacekeeper, he sometimes treats the others like well-meaning amateurs.
After several years with the Justice League, he formed a close bond with
Hawkgirl -- one so strong that the two developed a relationship out of
it. This relationship met a crushing end when it turned out that
Hawkgirl was already engaged to one of her own species.
For more on GL, refer to the Justice League Unlimited bio.