The Guardians of the Universe, alternatively known as the Guardians or Oans are a fictional extraterrestrial race in the DC Comics universe. They first appeared in Green Lantern Vol. 2 #1 (July 1960), and were created by John Broome and Gil Kane. Here they do not reveal their existence to Hal, bringing his 'energy duplicate' to them so they can hear of his origin. Before that their 'voice' was used in Showcase #23, when they told Hal via the Power Battery of an emergency on Venus.
Within the Green Lantern stories, the Guardians of the Universe are the immortal founders and leaders of the Green Lantern Corps, which they administer from their homeworld Oa at the center of the universe. The appearance of the male Guardians, modeled after then-Prime Minister of Israel David Ben-Gurion, is elderly, short, and blue-skinned with large heads and white hair.