Nial Declann was a Human male Force-sensitive who fought for the Galactic Republic during the Clone Wars. He later served the Galactic Empire both as one of its twelve Grand Admirals and as a Dark Side Adept. Declann's impressive, Force-enhanced skills as a TIE pilot brought him to the attention of Emperor Palpatine's agents. He was subsequently taken to the Sith world of Dromund Kaas, where he was educated in the ways of the dark side by the Prophets of the Dark Side. When his training was complete, he was allowed to return to service in the Imperial Navy.