Kvag Gthull was a male Dark Jedi and a member of Emperor Palpatine's Dark Side Elite. Chief interrogator at Bast Castle, he was responsible for gathering information from Major Ntthan after his capture in 10 ABY, in order to learn where the Solo twins were being hidden on New Alderaan. He later attempted to capture them, along with Tedryn-Sha and Xecr Nist, but was killed by Leia Organa Solo in the ensuing battle.