9. Darth Plagueis

The prequel revealed that the original trilogy’s big baddie, The Emperor Darth Sidious, was the Chancellor Palpatine. As a result of his machinations and Darth Bane’s Rule of Two, Sidious replaced the Republic with a new Galactic Empire and nearly wiped the entire Jedi Order out of existence.
Everything Sidious achieved originated with the actions of Darth Plagueis, who used his strategic mind and knowledge of the Force to shield his plans and help Palpatine rise to power. He was so strong that Sidious didn’t make a move against him until the very end, when all of the dominoes were in place.
We don’t know much about Darth Plagueis, but we know that he’s a character of great importance to the Star Wars movies, since his knowledge of the Force enabled him to physically cheat death and even create life.
The Force reacted to his power by creating the Chosen One!
So yes, the movies should explore Plagueis’ backstory!
