Anakin was conceived by the Force itself to oppose the Sith ... of Anakin Skywalker still remained in him. The first true ...
Star Wars has a relatively even split between Sith who began as Jedi and Sith who did not, at least in terms of Star Wars ...
Unfortunately, he taught his apprentice everything ... the same thing with Anakin, a “pure” vergence birth where he would eventually become the most important Jedi/Sith ever.
Ahsoka turns down Maul’s offer to join forces and defeats the former Sith apprentice ... to understand everything that happens in the Skywalker saga. It’s pretty incredible.