Sian Tevv was a male Sullustan politician during the Galactic Civil War, who opposed the Empire as a leading figure of the Sullustan Resistance, the Alliance to Restore the Republic and the New Republic for over a dozen years. Tevv was the son of two prominent Sullustan politicians, though he had a checkered youth, spending much of his time with a group of ambitious yet troublesome teenagers hanging around spaceports on Sullust. Eventually, however, he obeyed his parents' wishes and entered into Sullustan politics, quickly proving himself to be a capable politician. He eventually became disillusioned with Imperial politics, after realizing that the Empire was responsible for a great many atrocities.