Drellik was a Moff of the reconstituted Sith Empire during the time of the Great Galactic War, and was a Human male. He fathered at least two children, with his aspiration being that one would undergo training to become a Sith, while the other would become a military officer. One of his sons was chosen to receive training at the Sith Academy situated on Korriban under the tutelage of Darth Marr of the Dark Council; following this selection, his family lost all contact with him. Talos Drellik, the other son, entered military service and became an officer within the Imperial Reclamation Service, ultimately attaining the rank of lieutenant.
Talos, while conversing with his benefactor, the Sith Lord who would later be known as Darth Nox, mentioned that his father eventually embraced the concept of him working within the Reclamation Service after his initial anger subsided. Talos believed that the Reclamation Service provided a crucial function for the Empire by unearthing and safeguarding its past. Conversely, their father referred to his Sith brother as an "ungrateful little rat," although Talos interpreted this as his father's method of articulating his sorrow over the lack of communication.