Yes
Muun Dark Lord of the Sith, Darth Plagueis the Wise.
Darth Sidious
That's Palpatine's Sith name. You know, the Emperor. Vader's boss.
Emperor Darth Sidious, also known as Sheev Palpatine, is a fictional character in the Star Wars franchise. He is a Sith Lord who rises to power as the Emperor of the Galactic Empire and is the main antagonist in the original and prequel trilogies. Sidious is known for his manipulative and cunning nature, as well as his mastery of the dark side of the Force.
The Sith are a group of fictional characters in the Star Wars story. Members of the Sith order receive the ceremonial title of Darth to signify their membership into the Order.The Master of the Sith Order throughout the stories (movies) was Darth Sidious, also known as Senator/Chancellor/Emperor Palpatine.
Darth Vader IS a Sith Lord hence why he is sometimes called 'Lord Vader'. Whether another Sith Lord is stronger than him is completely debatable.
If you're thinking about the Sith Assassin armor, you get that by helping the Emperor by going fully over to the Dark Side and killing Lord Vader as revenge for his betrayal :)
Darth sidous is not the first sith lord. The sith was orignally a species and then they died out now they are something like the jedi the first original sith lord was I think Naga Shadow naga shadow was the 5th or 6th sith lord the first dark jedi was xandor The first dark jedi was xandor but the first sith was Marka Ragnos. Wrong the first sith was Darth Bane and the first Jedi was Yoda
I would answer with yes - absolutely. Once he took on the title "Darth" and became an apprentice to Darth Sidious, he became a Sith Lord. Even the apprentices in the Rule of Two created by Darth Bane are Sith Lords. If you are a Sith after the time of Darth Bane - then you are a Sith Lord whether you are the master or the apprentice. Hope this helps! =)
This question is extremely complicated. First of all, if your definition of a fan is a person who watched an liked Star Wars, then Vader is the last sith lord. However, Vader turned to the light side, so if this makes him not sith, the sidious was the last sith lord. In the expanded universe, the first sith lord who came after Vader was Darth Cadeus, aka Jacen Solo. If your definition of a sith is a person who uses the dark side of the force, then there are the witches of dathmir, the prophets of the dark side, and the emperor's hands. The first Sith Lord who came after Vader was actually Palpatine again in his clone bodies. And before Caedus (Caedus is the correct spelling) there was Dark Lady of the Sith Lumiya who converted Jacen Solo to the dark side.
DARK LORD OF THE SITH!! muahahahahaha! Obi-Wan is my bff....
the main sith lord in the old republic trailer is Darth Malgus