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Born to a clan chieftain on her species' homeworld of Ryloth, Oola was a green-skinned female Twi'lek. She devoted herself to dancing, and was trained at a celebrated school. When given the opportunity to choose between two careers, Oola decided to take her chance on Tatooine, a desert planet controlled by the Hutts.
At some point she was betrayed by a jealous rival and found herself falling more and more into shame and humiliation until finally, around the time of the Battle of Endor, Oola served as the slave girl of the Hutt crime lord Jabba Desilijic Tiure in his Tatooinian palace. She was forced to wear skimpy fishnet garments that did little to provide her modesty and wore a collar and chain around her neck.
Oola made her final dance shortly before the arrival of Leia Organa and Chewbacca, to the music of the Max Rebo Band. When the Twi'lek slave spun around and swung the chain at Jabba, trying to whip him, Jabba caught it and pulled her towards him. Oola pulled on her chain in defiance, but it did nothing, as Jabba lured her with the chain over the trapdoor beneath his dais, watching and laughing as he hit the switch and she fell screaming into the Rancor pit. She got up only to see Jabba's carnivorous pet emerge and her screams and sobs echoed throughout the palace. Oola was unable to defend herself as the Rancor picked her up and ate her.