Zayna Tredahl hailed from the planet Corellia.
She was the mother of Kafleer Tredahl, who worked as a holocam operator, and she experienced a short period of captivity at the hands of terrorists.
Within the 2003 video game Star Wars Galaxies: An Empire Divided, Zayna Tredahl existed as a non-player character. This massively multiplayer online roleplaying game was created by Sony Online Entertainment and distributed by LucasArts. The game's servers were taken offline on December 15, 2011. Because of the way older quests were designed in Star Wars Galaxies, Zayna Tredahl's species, gender, and physical form would be altered each time a player undertook this particular quest. However, the dialogue provided by Chertyle Ruluwoor during the quest suggested that Zayna Tredahl was a female.