Tenebrae, the Sith Emperor is born the illegitimate son of Lord Dramath on the planet Medriaas.
After spending four years carving a path through the Northern continent conquering numerous villages and massacring thousands, Tenebrae drew the notice of his father Lord Dramath. Dramath set off to investigate his son to decide how best to handle him. The boy stripped him of his power and drove him insane before murdering him. By the age of 13 Tenebrae conquered the whole planet.
At the age of just 13, having conquered his homeworld and usurping his father Lord Dramath, Tenebrae set off to the Old Sith Empire's throneworld of Ziost and met with the former Sith Emperor Marka Ragnos. Marka Ragnos recognized his power and named him Darth Vitiate and granted his official right to rule Medriaas.