The Core World lineage of Dagon Niriz, a Human Captain, was noteworthy; he commanded the Admonitor, an _Imperial I_-class Star Destroyer, within the Galactic Empire's navy, holding the rank of commander.
Grand Admiral Mitth'raw'nuruodo, known by core name "Thrawn," put Niriz's allegiance to him to the test in 2 ABY, during a skirmish with Ebruchi pirates. Following the Ebruchi's loss, Imperial Commander Voss Parck assured Niriz of Thrawn's confidence, emphasizing his belonging to a distinguished Core World family. Ultimately, Niriz joined Thrawn's Empire of the Hand.
Timothy Zahn's short story, "Command Decision," marked the family's initial introduction, featured in Star Wars Adventure Journal 11 released on November 1, 1996.