Darth Vexus

Darth Vexus is an ancient sith lord who was the second known being to have discovered the secret to Immortality, the first being Darth Mobius. He is a Hanar from the oceanic world of Kahje

Personality & Traits
Darth Vexus, unlike most Hanar, was very rude and impolite, which is an exceptionally rare feat among Hanar, he is also the only Hanar known to be trained in the force, and has around the same level of power as Darth Sidious, though is not as powerful in lightsaber combat

Trivia

 * Darth Vexus' personality is a reference to 'Blasto the Hanar Spectre' from the Mass Effect 3 Citadel DLC