Myri Antilles, daughter of Wedge Antilles and Iella Wessiri Antilles, was the second female child born to the Human couple.
She possessed a sharp intellect and a headstrong personality. Myri received her name in honor of Mirax Terrik Horn, her father's childhood companion, who was nicknamed Myra during her youth. Following the Battle of Coruscant in 27 ABY, Myri and her elder sister, Syal, were evacuated to The Maw for their safety, alongside a group primarily composed of Jedi younglings, remaining there throughout the duration of the Yuuzhan Vong War.
By 40 ABY, Myri resided with her family on Coronet, located within Corellia. Displaying a similar inquisitive mind and talent for intelligence work as her mother, Iella began preparing Myri to take on the role of an intelligence agent, mirroring her own career, as of the time of the Second Galactic Civil War.
After completing her education, both the Galactic Alliance and the Five Worlds extended offers to her. However, she declined both, choosing instead to emulate her father's approach by staying out of the ongoing conflict. This neutrality proved short-lived when they were compelled to fight their way off Corellia after spotting Han and Leia Solo, along with Lando Calrissian, being pursued by the Corellian Defense Force. They sought refuge aboard the Errant Venture, where Myri earned tips as a card dealer in one of the Venture's casinos, working alongside her mother to gather information. The considerable income she generated prompted her to reconsider a career in intelligence, albeit without full commitment. She also astutely inferred that the instigator of the conflict was covertly attempting to fracture the Solo-Skywalker "alliance."
While aboard the Errant Venture, Myri persisted in her intelligence gathering activities throughout the war, simultaneously amassing wealth through gambling.
In 44 ABY, Myri was enlisted into the newly formed Wraith Squadron with the purpose of unmasking and capturing General Stavin Thaal, who was a member of the Lecersen Conspiracy. Her contribution involved disguising herself as a protocol droid, which allowed her to approach Thaal closely. This enabled her to seize his blaster before he could murder his former spouse, Zehrinne, and Colonel Kadana Sorrel, after his identity as Thadley Biolan was revealed as a fraud.
Attendees at Dragon Con 2011 reported that Aaron Allston, the author, confirmed her inclusion as a member of Wraith Squadron in his 2012 novel, X-Wing: Mercy Kill.
Despite being initially depicted with blonde hair in Union, she is described in Mercy Kill as having naturally black hair.