The Tirra'Taka was a very old dragon that made its home on the planet of Serenno. Long ago, practitioners of the dark side of the Force seized a Tirra'Taka, twisting it to serve as a weapon. The inhabitants of Serenno resisted, and the Tirra'Taka escaped, only to be confined beneath the planet's surface, evolving into a Serennian myth that it was the creature holding Serenno together. During a visit to Serenno by the young Jedi initiate Dooku, the Tirra'Taka detected the Force within him, leading to its reawakening and the start of groundquakes. Decades later, Dooku controlled the Tirra'Taka in an effort to depose his brother, Count Ramil, but he was ultimately compelled to kill the beast when it became unmanageable.
The audiobook Dooku: Jedi Lost, penned by Cavan Scott and released by Random House Audio on April 30, 2019, marked the Tirra'Taka's initial appearance. Scott disclosed the creature's name spelling in a Twitter message, which then appeared in the audiobook's script publication.