* Darth Vader: The main villain of the original trilogy, he's a powerful Sith Lord and Anakin Skywalker's fallen counterpart.
* Darth Sidious (Emperor Palpatine): The mastermind behind the Galactic Empire and the puppet master of Darth Vader.
* Kylo Ren: The villain of the sequel trilogy, struggling with his identity and torn between the light and dark side of the Force.
But there are many more villains, depending on which era and story you're referring to:
* General Grievous: A cyborg general leading the Separatist forces in the Clone Wars.
* Count Dooku: A Sith Lord who manipulates the Separatist movement.
* Grand Admiral Thrawn: A brilliant military strategist and leader of the Imperial fleet in the Expanded Universe.
* Snoke: The mysterious Supreme Leader of the First Order in the sequel trilogy.
So, it really depends on which villain you're asking about! Can you be more specific? 😊