Kurlan

The Kurlan are a humanoid species native to the planet Kurl. 
Even after they achieved FTL travel, they practiced slavery depending on class in their society. In their religion, they believe in an afterlife and that the corpse of a member of government should be respected. Traditionally, the corpse of a leader is buried in the Tomb of Leaders. One of their most sacred texts is the Pillars of Strength. 
Despite unethical practices, they maintain trade relations with the Terran Federation.
*