The Expansionary Fleet complex functioned as a military installation for the Chiss Ascendancy's Expansionary Defense Fleet, situated on the planetary surface of Naporar. Within this complex resided the Taharim Academy. During the period spanning from 39 to 37 BBY, the Chiss apprentice Mitth'raw'nuruodo, whose core name was "Thrawn," was educated at the complex as a student of the Taharim Academy. Furthermore, the sky-walker guide Ali'astov at one time completed sky-walker instruction at this location.
The Expansionary Fleet complex found its mention in the 2020 published book Thrawn Ascendancy: Chaos Rising, which marks the initial entry in Timothy Zahn's Star Wars: The Ascendancy Trilogy.