Pesfavri, a planet situated within the Unknown Regions' Chiss Ascendancy, experienced attacks on numerous shipping freighters originating from it. These attacks were carried out by pirates state-sanctioned by the Lioaoin Regime some months prior to 36 BBY. Sometime after that, Junior Commander Mitth'raw'nuruodo (whose core name was "Thrawn") of the Ascendancy, became convinced of the pirates' link to the Regime. He subsequently substantiated this during a skirmish in the Kinoss system.
Within current Star Wars canon, the planet Pesfavri received a mention within a flashback included in Thrawn Ascendancy: Chaos Rising, a 2020 novel. This novel represents the initial installment of The Ascendancy Trilogy by Timothy Zahn. Regarding the Star Wars Legends continuity, the planet known as Pesfavri was initially referenced within Zahn's 2006 novel titled Outbound Flight.