An officer of the Imperial military held the position of first officer under Captain Gilad Pellaeon in the Galactic Empire's Third Fleet. They served on the Harbinger, an Imperial-class Star Destroyer. In the year 1 BBY, following a conversation between Imperial Director Orson Krennic and Third Fleet Grand Admiral Balanhai Savit, Savit summoned Pellaeon and his first officer to a meeting. This meeting took place on Savit's flagship, the Star Destroyer Firedrake, and concerned Pellaeon's upcoming pirate-hunting mission.
The first officer who served with Gilad Pellaeon was referenced within Thrawn: Treason, a 2019 novel. This novel represents the concluding installment of the Thrawn trilogy authored by Timothy Zahn.