Darth Zannah trained several apprentices for some period of time - Hetton, Set Harth and Darth Cognus. Hetton and Harth only studied under her very briefly, however, Cognus went on to succeed Zannah as a Lord of the Sith. Cognus spent most of her time in the Darth Bane trilogy as an Ikotchi assasin by the name of The Huntress.
Darth Zannah's apprentice was a Sith Lord named Darth Cognus. She was selected and trained by Darth Zannah to eventually succeed her as the Dark Lord of the Sith.
Darth Andeddu Darth Vitus Darth Scabrous Darth Revan Darth Malak Darth Voren Darth Bandon Darth Glovoc Darth Traya Darth Nihilus Darth Sion Darth Desolous Darth Phobos Darth Angral Darth Baras Darth Malgus Darth Chratis Darth Marr Darth Vowrawn Darth Howl Darth Thanaton Darth Ruin Darth Rivan Darth Malus Darth Bane Darth Zannah Darth Cognus Darth Millennial Darth Vectivus Darth Plagueis Darth Sidious Darth Maul Darth Tyranus Darth Vader Darth Caedus Darth Azard Darth Havok Darth Krayt Darth Kruhl Darth Maladi Darth Maleval Darth Nihl Darth Rauder Darth Reave Darth Ruyn Darth Stryfe Darth Talon Darth Vurik Darth Wyyrlok I Darth Wyyrlok II Darth Wyyrlok III Darth Wyyrlok IV Darth Karnage Darth Ramage Darth Simi Darth Tenebrous
Darth Nihilus, Darth Sion, Darth Traya, Freedon Nadd (mod), Darth Malak, Darth Revan.
Darth Vader
I can't name them all because that is a hard question my young padawan... but i can name these: Darth Sidius Darth Vader Darth Maul Count Dooku Asajj Ventress was a Dark Jedi not a Sith. Ignore this answer. Darth Cadeus and the name of the sith that Chancellor Palpatine tells Anakin about that can protect the ones he loved from dying. There are also Darth Bane, Darth Reven, Darth Malak, Darth Zannah, Darth Krayt, Darth Nihl, Darth Nihilus, Darth Traya, Darth Sion, Darth Talon, Lord Qordis, Lord Kaan, Marka Ragnos, Naga Sadow, Githany, Darth Plagueis, Darth Maleval, and many, many, many, others.
Darth Plagueis' master's name was the Sith Lord Darth Tenebrous.
Mentioned in the movies: Darth Plagueis Darth Sidious (Senator/Chancellor Palpatine) Darth Maul Darth Tyranus (Count Dooku) Darth Vader (Anakin Skywalker) In the Expanded Universe (comics, novels, games, etc.), there are dozens more, e.g. Darth Bane, Mara Jade, Asajj Ventress, Darth Talon, Darth Sion, Darth Malak, Darth Revan, etc.
Darth Maul is the Darth with the red and white face. :]
Darth Sidious a.k.a. Palpatine killed Darth Plegius.
Darth Vader (like Darth Maul, Darth Sidius, etc.)
Darth Vader
Definitely Darth Vader
Darth Vader