- "Master Barrek! Come in!"
- ―Obi-Wan Kenobi witnessing Barrek's death
At an early age, Barrek's mother discovered that he was Force-sensitive and willingly gave Daakman over to the Jedi Order. Barrek became a powerful member of the Order, quickly ascending to the rank of Master after training his first Padawan, and took a second apprentice named Sha'a Gi. In 22 BBY, Barrek and Sha'a Gi were operating in the Outer Rim when they received word that war had broken out between the Republic and Confederacy of Independent Systems on Geonosis, and that Barrek's first apprentice had died in the fighting.
Saddened by this news, Barrek accepted the rank of Jedi General in the Republic's clone army. Four months after the start of the war, Barrek and Gi uncovered intelligence that the Separatists had built a battle droid factory on Hypori, and the two were tasked with leading an elite task force in destroying the factory. However, their battle plan went horribly wrong once the taskforce's transport ships exited from hyperspace over Hypori, hitting an orbital mine grid, causing them to crash land on the planet. The Separatists' droid army then began to assault the crashed Republic ships, killing what was left of Barrek's clone forces, leaving Daakman and the task force's Jedi trapped in the wreckage. Stranded behind enemy lines, Barrek tried to contact General Obi-Wan Kenobi on Muunilinst, but was attacked by the battle droids' leader, General Grievous. Barrek managed to reach Kenobi and inform his fellow Jedi on his taskforce's situation and call for an extraction, but Grievous, a highly advanced cyborg trained in lightsaber combat, cut down the Jedi Master before help could arrive and crushed his comlink with his talons.
- Daakman Barrek first appeared in Chapter 20 of the Star Wars: Clone Wars animated television series, which aired April 8, 2004. In the episode, Barrek was only called Master Barrek, and was voiced by Daran Norris, who also voiced Barrek's fellow Jedi Ki-Adi-Mundi and Tarr Seirr. Barrek was later given an entry in the Star Wars Databank, which revealed his full name and his backstory. Master Barrek also appeared in a mobile strategy game Star Wars: Battle for the Republic, and was later mentioned in the novel Labyrinth of Evil.