The Green Lantern Corps is a fictional intergalactic police force in the DC Comics universe. They are tasked with maintaining peace and order across the universe, using power rings that grant them various abilities, including flight and energy projection. Each member is chosen from different planets and species, united by their ability to overcome fear. The Corps is led by the Guardians of the Universe, ancient beings who oversee their operations. Notable members include Hal Jordan, John Stewart, and Guy Gardner. The Green Lanterns draw their power from the emotional spectrum, specifically the color green, which represents willpower.