The Green Lantern Corps was created by John Broome and Gil Kane, first appearing in Showcase #22
The Green Lantern Corps are an intergalactic peacekeeping force created by the Guardians of the Universe. Every Green Lantern is selected by the strength of their willpower and given a power ring that creates energy constructs controlled by will. They patrol all 3600 sectors of the known universe. Their home planet is Oa, where their Central Power Battery is located. Ion is their representative entity. There are nine Lantern Corps in total representing different emotions. The Green Lanterns are not the only peacekeeping force created by the Guardians, and their past failed experiments have included the Manhunters and the Third Army.