Sith ghost

A sith ghost is a spirit of a dead Sith. Before the New Republic, the Sith had been trying for years to keep their spirits alive after death, the Jedi usually live on in the force, where as Sith don't. Their have been some cases of Sith living on, such as Ajunta pall, an evil Sith lord from the ancient times, that by useing his power to live on on Korriban inside his tomb.