Una functioned as a nurse droid located at Reena University. The dean, Ry Harket, kept a close watch on the supposed "symptoms" displayed by her student, Axel Greylark, who was believed to have malongo pox; Harket accurately—though without verification—suspected he was feigning illness. To demonstrate his fabrication, she tasked Una with numerous temperature checks; however, these attempts were unsuccessful. Throughout this ordeal, Greylark dramatically implored her to protect herself, to which Una cleverly replied that aquatic life forms, like Harket, possessed immunity to the illness he claimed to have.
Una made an appearance in "The Queen's Bloom," a short story penned by Zoraida Córdova. This story was included in The High Republic: Tales of Light and Life, a young-adult anthology novel from 2023. The novel's release was part of the broader Star Wars: The High Republic multimedia endeavor.