Green Lantern Corps

The Green Lantern Corps are an inter-galactic police force dedicated to protecting sentient life in every form. Established thousands of years ago by immortals beings known as the "Guardians of the Universe" Green Lantern Officers are chosen for their ability to overcome great fear and are given a power ring fueled by the strength of their willpower.

Each member has a great deal of autonomy as to their methods in their jurisdiction, subject to review by the Guardians if they feel the Officer in question has abused his/her assigned authority. The individual Lanterns are responsible for arranging their replacements if they are near retirement or death. If the Lantern dies before that obligation is met, the ring will find and seek another to be trained on its own. In rare circumstances, Guardians will personally go out into the field to recruit a replacement.

Appearance
Upon recruitment each Green Lantern in the Corps received a Power Ring, a Power Battery shaped like a lantern (with which the ring is recharged), and a uniform. The default uniform design for humanoids was a green section covering the torso and shoulders, black arms and leggings, green boots, white gloves, green domino mask and a chest symbol of a stylized Green Lantern icon on a white circle. Lanterns were allowed to customize their uniforms as long as the color scheme and the symbol were present. When the nature of the being precludes a standard uniform, an equivalent arrangement is expected as a substitute.

Trivia

 * The Green Lantern Corps first appeared in Showcase #22 (October, 1959)
 * While the corps usually has only two officers assigned to each of the 3600 sectors in the universe, heavily-populated and "hot-spot" Sectors like Sector-2814 (Earth) can have several Lanterns assigned to its protection.
 * The corps' power is fueled by Ion; an entity that is the embodiment of willpower.