What is known suggests that Khonsu II is a dynamic and able leader. His first action of record was the dissolution of the Parliament of Vasuda following the 14-Year War and the Great War. He is primarily credited with the Vasudan recovery and expansion during the Reconstruction, and the creation of the Galactic Terran-Vasudan Alliance.
Khonsu's term of office is unknown, though at the time of FreeSpace 2 he has undoubtedly been in power for at least a generation. Whether he was Emperor during the 14-Year War or the Great War is unknown, though presumably the term "Parliamentary Vasudan Empire" suggests there was an emperor.