Question: who are bad guys in star wars?
Answer: Emperor Palpatine (aka Darth Sidious) Lucasfilm. Fans of the original trilogy still shudder when they think about how much of a baddy Palpatine is, especially in "The Empire Strikes Back" (1983). ... 
Supreme Leader Snoke. Lucasfilm. ... 
Boba Fett. Lucasfilm. ... 
Kylo Ren. Lucasfilm. ... 
Darth Maul. Lucasfilm. ... 
Count Dooku. Lucasfilm.