Sebastian Parnell, a general in the Imperial military, held the position of governor for the Sil'Lume system throughout the era of the New Order. His most prominent features included his silver-colored hair and striking ice-blue eyes.
His responsibilities as governor included personally ensuring that the miners and prospectors operating within the Sil'Lume asteroid belt were brought under the dominion of the Empire, and he was also in charge of supervising the inmates incarcerated on Tol Ado, which was the third planet within that system.