1 - Darth Vader - the big daddy himself comes in at the top spot. His theme music playing as he glides across the deck of the Imperial Cruiser Tyderium.... nothing tops him.
2 - Boba Fett - the most popular bounty hunter in the galaxy. He struck a deal with Vader, and brought Han back to Jabba, sealed in carbonite.
3 - Emperor Palpatine - in Return of the Jedi, the old man really brought the heat.
4 - Count Dooku - any villain played by Christopher Lee is bound to be a favorite.
5 - Jabba the Hutt - the fattest of all our Star Wars characters (except for maybe the Sarlacc).
6 - Darth Malek - the Sith Lord from the "Star Wars: Knights of the Republic" book series
7 - Jar Jar Binks - So evil! he ruined an entire movie, and almost extended his grasp into the next one. Such treachery is beyond the scope of most villains.
8 - General Grievous- the four-armed saber expert from Episode II
9 - Darth Maul - he wielded a pretty nice double saber in the first prequel.
10 - Grand Moff Tarkin - who commanded the first Death Star. The first of many. "Charming to the last."
Honorable Mention to Greedo - the bounty hunter who tried to take Han Solo back to Jabba in "A New Hope." (he failed), and Bib Fortuna, Jabba's chief of staff;
along with Kylo Ren from Episode VII: The Force Awakens. Vader's grandson has moxie, as does the new Supreme Leader (well animated).
See also on Top2040:
Don't get too caught up in the Dark Side. There is another path.
May the Force be with you! Preferably on the light side...