Oogi is a flying bison owned by Tenzin and his family. He is a descendant of a group of flying bison found by Avatar Aang after the species was thought to be extinct. Oogi's name origin is theorized to be named after "oogies," a slang term that Sokka created," when he saw any romantic displays of affection between Katara and Aang.
Oogi was used by Tenzin and his family to travel to the Southern Water Tribe to meet the newly incarnated avatar, at which point Tenzin informed her that he would be unable to train her due to unrest in Republic City. Oogi was also used to fly the family back to Air Temple Island. Oogi later flew Tenzin and Korra back to Air Temple Island under the command of the airbending master.