Barruk was a member of the Guardians of the Whills, a religious order, during the era known as the High Republic Era. In the year 382 BBY, Barruk's assignment placed him at the Second Spire, located in the Holy City on the moon of Jedha, which was the site of a peace summit between the warring Outer Rim planets Eiram and E'ronoh. When an explosion shook the Second Spire, Barruk, along with fellow Guardians Selik and Jance, rushed to investigate the source of the disturbance. They discovered that Eirami Ambassador Lian Cerox had sustained injuries. Subsequently, Selik directed Barruk and Jance to protect and accompany Jedi Master Creighton Sun as he transported Ambassador Cerox to the medical station within the Spire.
The High Republic: The Battle of Jedha, an audio drama featuring Barruk, was penned by George Mann. It was made available on January 3, 2023, as a component of Phase II of the Star Wars: The High Republic multimedia project. Prior to the release of the audio drama's script on February 14 of that year, the precise spelling of the character's name was not confirmed.