Alvis Preston was a captain in the Imperial Navy, who served under former admiral-turned-warlord Celie Namgadi. Preston was born on Coruscant, joining the Imperial Navy at a young age. He showed an exceptional degree of tactical sense and cunning, leading to him being rapidly promoted. At some point about the time of the death of the Emperor, he was given command of the Super Star Destroyer Atom Smasher, which served as Admiral Namgadi's flagship.