Star Wars: Everyone Who Knew Palpatine Was a Secret Sith Lord

[هَـ-ђāŵĩ-ـَاوِيتم التحقق من هَـ-ђāŵĩ-ـَاوِي كعضو.]

Emperor Palpatine carefully concealed the fact he was a Sith Lord, but there were some Star Wars heroes and villains who knew the truth. Darth Sidious was always a schemer, preferring to operate in the shadows rather than stand in the spotlight. When he finally became Emperor in Star Wars: Episode III - Revenge of the Sith, he saw no need to abandon the secrecy that had served him so well for years. The Empire he ruled was characterized by deceit and mistrust, with only the upper echelons knowing the truth about their leader.
Thomas Bacon

https://screenrant.com/star-wars-everyone-knew-palpatine-secret-sith/