Uliq Quel Droma and Exar Kun (Star Wars: tales of the jedi)

these two was the main characters from the Star Wars tales of the jedi comic series written by Tom Veitch and Kevin J. Anderson. their adventures are setted 4000 years before Luke Skywalker' s birth and tell about their fall to the dark side and their rise as Sith lords which led the Galaxy into the Great Sith war.