Casting:

Darth Vader
Darth Maul
Darth Tyranus
Darth Sidious
General Grievous
Darth Revan
Darth Malak
Darth Nihilus
Visas Marr
Sith Emperor Vitiate / Valkorion
Empress Vaylin
Darth Malgus
Darth Marr
Darth Acina
Darth Atroxa
Darth Jadus
Darth Phobos
Darth Bane
Darth Zannah
Darth Caedus
Darth Talon
Darth Nihl
Exar Kun
Lana Beniko
Asajj Ventress
Maris Brood
Komari Vosa
Sev'rance Tann
Agent Naare
Inquisitor Jerec
Lord Desann
Lord Starkiller
Tavion Axmis
The Second Sister
The Fifth Brother
The Seventh Sister
The Ninth Sister
The Grand Inquisitor
Mara Jade
Dark Ahsoka Tano
The Dread Masters
Nightsister Charal
Nightsister Merrin
Kylo Ren
Supreme Leader Snoke