Koob was known amongst the crew for having a voracious appetite, with Gabs speculating that he ate their prey during a mission on Carida.
He was sent on a mission to Coruscant by Saw Gerrera to steal intelligence from Senator Daho Sejan alongside Kestis, Lizz, Gabs, Bravo, and newcomer Bode Akuna by disguising themselves as Coruscant Security Forces, bringing in Kestis to the senator. The plan succeeded, but during the extraction, the Ninth Sister ambushed them and killed the senator. Koob and Lizz attempted to fight her, only to end up killed.