Fidonis Iuguolo was a mysterious darksider and a member of an ancient warrior species. His affiliation was not known, but it was well known that he was the loyal servant of an unknown master, and a harbinger of death. Fidonis' longevity allowed him to become a master of both the lightsaber and the dark side of the Force, making him a very dangerous creature to be reckoned with. The purpose of Fidonis' assignment under his master never was clear, nor was the identity of his master, as Fidonis made every effort to maintain these well-kept secrets.