While Darth Bane's story is not as fleshed out in the Star Wars canon timeline, the basics of his backstory remain the same.Near the end of the Clone Wars, Jedi Master Yoda traveled to Bane's tomb ...

Darth Bane isn’t just one of the most powerful Sith Lords, ... And he only achieved all that thanks to his immense Force ability. A stand-out at the Korriban Sith Academy, ...

With that appearance, Bane, his backstory, his rebellion, and his eventual murder by his apprentice, Darth Zannah, are considered canon. Another appearance in a future series or movie is possible.

The Order of Sith Lords follows the Rule of Two — a Master and an Apprentice — created by Darth Bane. This structure prevented infighting and helped preserve Sith knowledge across generations.

After the Jedi felled the remaining Sith, one Lord remained: Darth Bane. As a direct answer to the fall of the Sith, Darth Bane reformed the order by establishing the Rule of Two, ...

We know the Jedi battled Darth Bane roughly 1000 years before the movies, and it was Bane who instituted the Rule of Two and ensured the Sith would feign extinction and go into hiding.

Darth Bane was the true Sith’ari. To put it into the context of the current timeline, this all is taking place thousands of years before the prequels. Like 28,000 years or more ago.

Lucasfilm. That would be fitting when it comes to a story about the Sith. Darth Bane implemented the Rule of Two so his order could operate in the shadows.

8. Darth Bane Before Darth Bane the Sith had been a large cult containing numerous Sith Lords and apprentices. However after Bane created the "Rule of two" all of this changed.

11. Darth Zannah . As the apprentice of Sith mastermind Darth Bane in Legends canon, Darth Zannah was the first Sith to officially succeed her Master under the newly established Rule of Two.