Darth Terialkis was an extremely powerful Sith and the former deputy of an unnamed Sith organization. Terialkis trained Darth Taurus and another apprentice earlier; however he split from the organization and began to focus on increasing his own power only. The remaining members of the organization resented Terialkis for what they viewed as his betrayal and attempted to destroy him on more than one occasion; however he proved to be a match for all of the other Sith and killed them. He also, indirectly came close to destroying the Jedi Council by anonymously influencing Project Flashknife. The members of the project were uncovered by the members of the newly formed Alliance of Sentient Races and their plans foiled; an enraged Terialkis murdered every menber of the ASR that had taken part in