Sithis

"I am the heir of Aloysius Kallig and Tulak Hord, and Master of the Dead. I am power unlike any you have known: absolute, infinite, and unrelenting. You have no choice but to prepare for a long dark future as my subjects—and my slaves. Eventually, all the living shall fear the dead."

- Lord Sithis Lord Sithis, also known as Akel to the New Sith, SITHISIT to the Brotherhood of Darkness, Psijii to the Voss, the Great Dragon to the Cult of the Screaming Blade, known for the vast majority of his life as Darth Nox and formerly as the Sith Lord Khaetor Kallig. Sithis was an immensely powerful Rattataki male Dark Lord of the Sith who served the Sith Empire during the Cold War, Galactic War, the New Sith in the New Sith Wars, and the Order of the Sith Lords during the Clone Wars.

Born in 3685 BBY simply as Khaetor, the future Dark Lord started at the bottom of the ladder as a Rattataki slave. Khaetor was extremely well-adapted in the Force at a young age. Furious on how his people were treated by the Imperials, Khaetor took it upon himself to exact revenge on the Imperial soldiers. He blasted them with Force lightning but instead of being executed for attacking his masters, Khaetor was taken as a Sith acolyte to Korriban to train in the ways of the Sith.

As the future Darth Nox succeeded in overcoming all of the trials imposed by the academy's masters and instructors, Khaetor rose in the hierarchy, embracing the way of the Sith Inquisitor. Khaetor was apprenticed by Darth Zash, a female Sith Lord and member of the Sphere of Ancient Knowledge.

During his rise to power, Khaetor developed a bitter rivalry with Darth Thanaton, a powerful Dark Lord of the Sith and a member of the Empire's Dark Council. The antagonism between the two Sith was brought to an end when the Inquisitor defeated Thanaton on the very floor of the Council chamber, occupying his seat on the Dark Council, as the Dark Councilor heading the Sphere of Ancient Knowledge.

Lord Sithis was the true architect behind the Rule of Two along with his apprentice, Darth Bane. Years before that, Lord Sithis tried to reconstitute the Sith Empire for the third time four thousand years after his first death by turning the Jedi Masters Phanius and Skere Kaan to the Dark Side and allowing Phanius to found the New Sith Order by simultaneously renaming Phanius "Darth Ruin", and allowing Skere Kaan to form the Brotherhood of Darkness, and taking them as his secret apprentices. After his first death at the hands of the Togruta Jedi Master Ch'vyalthan sometime before 3500 BBY, Sithis, who back then was known as the Dark Councilor Darth Nox, performed a series of Darkside rituals to transfer his essence outside of his body to cheat death.

After this event, the body-less Dark Lord was hellbent on restoring the Sith Empire to greatness. In his quest to doing so, Nox renamed himself Lord Sithis, in honor of the Sith. He discarded his alien slave heritage and donned himself the true successor to Emperor Vitiate.

Speaking Lord Sithis' name was a great taboo. Therefore, when people were referring to him, they would use the terms He-who-must-not-be-named or You-know-who. In writing terms, Sithis' name would be spelled as PSJJJJ, a name that was meant to be unpronounceable.