Darth Merlok

Qaas, later known as Darth Merlok was a Miraluka male who fought in the gladiatorial pits on Cato Neimoidia before becoming the Sith Apprentice of Darth Arbuss.

Qaas lived on Cato Neimoidia and was enslaved by the Neimoidians to fight in their entertainment pits. Due to his force-sensitivity, Qaas had a natural advantage over the other gladiators her fought every day.

In 1008 BBY, Darth Arbuss, former apprentice of Darth Bane, came to the planet looking for a new apprentice. She offered the position to Qaas who initially refused the offer. However Arbuss staged an escape for the slave gladiators who revolted against the Neimoidians. Qaas, now a free man accepted Arbuss' offer and became Darth Merlok. The two Sith travelled the galaxy together, albeit their relationship was rocky and purely professional.

In 998 BBY, Merlok devised a plan to kill Arbuss and become the master Sith. Whilst on their secret base on Yavin 4, he distracted her with a projection of his body and stabbed her in the back, although the use of the projection paralysed Merlok from the waist down. Due to his damaged body, he vowed to never take another apprentice.

Several years later, a Pau'an historian named Spendral becomes obsessed with the life of Darth Bane. He discovers that Merlok has abandoned the Rule of Two and sets out to avenge Darth Bane's lineage. He finds Merlok on Ithulus and kills him. Tasting the power of the dark side, he takes on the name Darth Harrow and becomes the new Dark Lord.