5. Knights of the Old Republic
With the 2014 realignment of the Star Wars canon, most of the excellent mythology of the franchise that occurred before Star Wars: Episode I — The Phantom Menace vanished into space. This implies there’s space for another interpretation of the Knights of the Old Republic series. This would recount clashes between Jedi and Sith many years before the films, with stories spanning over computer games and comics. After all, even nature dislikes a vacuum.
6. Kylo Ren
We see him in training with Uncle Luke in the present trilogy. However, there’s a lot of interest for that backstory and what had gone wrong with the Knights of Ren.