Jooks was a Theelin of the female persuasion, a species native to Theelin. She made her home on the Colossus refueling station, which was orbiting Castilon during the twilight years of the Cold War that pitted the First Order against the Resistance. You could often find her at Aunt Z's tavern.
Kazuda Xiono's initial visit to Aunt Z's Tavern coincided with Glem briefing Jooks on Kazuda's notoriety as they walked in. A scuffle broke out soon after, and Jooks initiated a conflict with Yani. When Jarek Yeager intervened to halt the disturbance, she was perched upon Narb's back.
The following day, preceding the contest between Kazuda and Torra Doza, Jooks and Narb were discovered having apparently slept outdoors on the Colossus's deck, waking up next to a barrel.
When Xiono was in a dangerous position on the exterior walkways of Doza Tower, the patrons of Aunt Z's Tavern could plainly see his predicament. Jooks wagered 60 credits on Xiono's impending fall.
The character of Jooks was introduced in the Star Wars Resistance episode titled "The Recruit," with Mary Elizabeth McGlynn providing her voice.