"Pontriss" represents the designation assigned by the Chiss syndic Mitth'ras'safis, whose core name was "Thrass," to a male person who tried to perform a robbery at an unidentified_bistro located on Naporar, a planet within the Chiss Ascendancy, around 19 BBY. The individual belonged to the Chiss species.
To aid Pontriss in his attempted theft, Jaraki, a companion of Pontriss, pretended to suffer a heart attack, creating a diversion that was intended to occupy the bistro's staff. However, their plans were thwarted by the presence of Syndic Thrass and Mitth'raw'nuruodo, an officer in the Chiss Expansionary Defense Fleet, who were both present in the bistro and worked together to stop the criminal act.
The character "Pontriss" is featured within flashback sequences in Thrawn Ascendancy: Lesser Evil, a 2021 book penned by Timothy Zahn. This novel serves as the concluding installment of his Ascendancy Trilogy.