Oola was a Twi'lek dancer in Jabba the Hutt's court. She was the daughter of a clan chieftain on Ryloth and tricked to becoming a dancer by Bib Fortuna and Jerris Rudd as a gift to Jabba. She was also the half sister of Nolaa Tarkona, the leader of the Diversity Alliance.
She and Sienn'rha, another Twi'lek, were trained together as dancers at one of the greatest dance schools on Ryloth. As they were in Mos Eisley on their way to Jabba's Palace, Luke Skywalker ran into them and attempted to set them free. He killed Rudd and rescued Sienn, but Oola wanted to see what Palace life was like, naively thinking she would be able to leave at any time. Little did she know that it wouldn't be what she expected. Fortuna took Oola, and succeeded in giving her to Jabba, where she replaced the previous dancer Nima'tar.
Rather than the customary dancing veils, Oola was given only a flimsy net costume to wear, loosely held together by narrow leather strips. Jabba was immediately enamored with her, and chained her by the neck to his throne as his personal property and slave girl. Oola was forced to dance for him, as well as give pleasure when the depraved crime lord beckoned, but she was determined to escape from her horrible existence, one way or another.
Defiled and miserable, fed only on scraps, she could not decide if it was better to keep enduring the Hutt's carnal embrace until escape was possible, or to die cleanly and well, and escape that way. Oola chose to refuse Jabba's advances at least once before her final dance, and was thoroughly beaten by his Gamorrean guards for this act of defiance. This beating was conducted "scientifically", so as not to leave her with any disfiguring bruises.
Later that day, Oola was able to speak briefly with C-3PO, who told her that Luke was indeed going to return to rescue them, and her hope was renewed. Her spirits high for the first time since her imprisonment, Oola performed the best dance of her life, which unfortunately would also be her last.
Enticed by her performance, Jabba pulled on her chain, wanting more than dance from her, if you catch our drift. Having suffered such invitations before, Oola refused, grabbing her end of the the leash. As she hauled back on her chain and pleaded with Jabba, he became angry and tugged harder, bringing her over the trapdoor in front of his throne. She was eaten alive by Jabba's rancor after Jabba dropped her into the rancor's pit. Her legend, however, would live on in the form of impersonator Dame Needa, who put on a nightly Oola tribute show at the Gardulla Oola hotel and casino in Mos Eisley.