The Tyrak family line represented a Human bloodline within the Sith Empire, characterized by a tradition of serving in the Imperial Military. Nevertheless, instances of consanguinity occurred within the family; Moff Tyrak's grandfather took his niece as his wife, and Tyrak's mother and father shared a relationship as first cousins, though the degree of removal is uncertain (either once or twice). Consequently, Tyrak exhibited unusual or peculiar traits.