Vrad Adharan (cloned body)

Since Vrad Adharan´s death in 189 A.B.Y., his loyal followers, the Adharii Order seeked desperately a way to resurrect their god. 
Many years later, the Adharii commanders reached the ancient Sith planet Exegol, when they amassed the dark energies lingering in the area into Vrad´s cloned body, begging his soul to return from the dead and finally destroy the ones who opposed him 780 years ago.
After the brutal ritual (in which 66 of the most loyal Adharii sacrificed themselves to summon Vrad´s soul), the cloned body opened his eyes.
The reborn Vrad Adharan and his remaining followers settled in the planet Exegor, where he took the alias of Darth Tartarus, Vrad never joined the Sith Order in his life, but he found that necessary to gain the local people´s loyalty, who revered the Sith as their gods and protectors. 
Years later, a young man arrived in Exegol, the guards did not stop him, Darth Tartarus had sensed him many years ago. The man had left the Jedi Order recently after discovering his true Sith lineage, and he demanded answers. Vrad happily accepted. The man´s name was Lucas Solo, but he later became known as Kylo Ren.