Surprisingly, the much more recent Star Wars show The Acolyte not only added a brand-new Sith, Qimir/the Stranger, but also finally brought Palpatine's former Sith master, Darth Plagueis, to the ...

Palpatine would later attain the helmet from the Jedi vault and give it to Darth Vader. Momin's spirit possessed soldiers on Mustafar.Whoever was pushed to wear it had Momin's mind.

I Get There Are Challenges To Using Darth Vader And The Emperor On Andor, ... If Qimir is Plagueis, I'd be intrigued by the possibility that he had more apprentices than just Palpatine.

The Acolyte directly tied Osha to Darth Vader, Luke Skywalker, Rey, Kylo Ren, and Yoda when she tried on Qimir's dark side helmet.