Descended from an independently-wealthy family, Talas chose a life of military service out of a sense of duty and military tradition. Her mother had a higher security clearance than she, commanding an Imperial Infantry Unit. The last four generations of her family joined the Imperial Guard. (ENT: "Proving Ground")
During the year 2153, Talas was aboard the Kumari when it was sent to track Enterprise NX-01 inside a region then known as the Delphic Expanse. As part of that mission, Talas worked closely with her Enterprise counterpart, armory officer Lieutenant Malcolm Reed, both to aid in the ongoing repairs being made to that ship and to secretly further the Andorian Imperial Guard's agenda to obtain a prototype Xindi weapon. (ENT: "Proving Ground")
In 2154, Talas initiated a romantic relationship with her superior officer, Shran. The relationship was still a recent development in November of that year, when the Kumari was destroyed by a Romulan vessel disguised as a Tellarite cruiser. Talas, Shran, and eighteen other crew members were rescued by Enterprise, coincidentally ferrying Tellarite Ambassador Gral and his party to the planet Babel. Despite being confined to quarters, Shran and Talas managed to confront the Tellarites and, in an ensuing scuffle, Talas was fatally wounded when the Tellarite Naarg fired a MACO phase-pistol at point blank range. Dr. Phlox did his best to treat her. Shran joked with her that the ship's doctor was secretly in love with her and wanted to keep her to himself; hence his keeping her in sickbay. She later died of phase-pulse infection in the Enterprise sickbay. (ENT: "Babel One")
As she lay dying, Talas asked Shran to avenge her. Shran challenged her killer to the Ushaan, a ritualistic fight to the death. However, Captain Archer substituted himself in Naarg's place to avoid destroying the uneasy Andorian, Human, and Tellarite alliance. (ENT: "United")
Talas was played by actress Molly Brink.
In the final draft script of "Proving Ground", Talas was initially described as "a striking Andorian woman [....] Her long white hair falls over the shoulders of her form-fitting uniform." A later-added teaser scene referred to her simply as "a striking female officer".