The Ultaarian Greenback represented a sentient race, possessing two legs and four armed appendages. This species was characterized by its pink skin, green eyes, sizable fangs, and a distinctive pink horn projecting from its nose. In the era of the Galactic Civil War, one member of this species engaged in a gladiatorial contest, the Big Game, against the Human Han Solo on the Wheel space station. This four-limbed warrior fought with a dagger thorn held in each of its hands throughout the duration of the conflict.