Darth Armonus

Darth Armonus
He once tried to make Xavious Zorfone his new apprentice during his cults attack on Xavious Zorfone's homeworld. But during an attack on the cult's fleet he left Xavious Zorfone in an escape pod while the rest of his cult fled to the planet of Jandoon in the Unknown Regions where they put up a base untill they were found and destroyed by republic forces

Darth Armonus is an unknown man who we dont know alot about but we know he was a human male

He is also known for attacking kashyyyk a few times

Darth Armonus never was that great, his legacy was quickly destroyed and so was his work but he was very strong in the force and a powerful sith