Darth Marlock

Darth Marlock was a Dark Lord of the Sith who was the first apprentice of the Dark Lord Na'daz he confronted his master in a duel but he was stopped from finishing off the Dark Lord due to a wall collapsing due too an explosion from force Lightning. Marlock survived the thought bomb when he was on Ruusan however he found out about Bane's rule of two and vowed he would join them some day. He lived an extremely long life and eventually became Darth Cognus's second apprentice after Darth Millenial. He eventually killed Darth Cognus and took his own apprentice Darth Vectivus when he killed Vectivus's mother although he was eventually killed by his apprentice Darth Vectivus.