Amedda was one of the few beings in the galaxy who knew Palpatine's secrets, most notably his true identity as a Sith Lord.
Now, those who knew he was a Sith Lord: Dooku, Vader, maybe Tarkin, Yoda, royal guards, Mas Ameda, Maul, Plagueis, Mace Windu and co, Obi-Wan - off the top of my head.
He had a run in with Palpatine in the WBW along with Ahsoka, and later had a chat with him via hologram. So Ezra definitely knew that Palpatine was Sith.
If Maul knew, he would have tole Obi Wan or another Jedi during the Clone Wars. Dooku knew Palpatine was Sidious as he told Obi-Wan about him controlling the senate and referred to him as the dark lord. There's no real way of actually knowing if he knew ab palpatine.
Count Dooku - himself revealed to be a Sith Lord - revealed to the captured Jedi Knight Obi-Wan Kenobi on Geonosis in 22 BBY that a Sith named Darth Sidious held influence over several senators in the Galactic Senate; it was the first such time that the Jedi learnt about Sidious in name.
Star Wars has confirmed Palpatine wasn't actually a Sith Lord at all - and he knew it. He may have been considered the pre-eminent Sith Lord of the original trilogy, but it's long been clear Palpatine's relationship with the Sith was somewhat unorthodox.
In the Star Wars universe, Ezra is a 15-year old orphaned street urchin, scavenger/salvager and con artist who joins the crew of the Ghost in freeing his home planet of Lothal from the tyranny of the Galactic Empire and is taken under the wing of Kanan Jarrus, who trains him in the Jedi arts.
the novel tarkin, written by James Lucino, confirmed that Grand Moff Tarkin. knew the true identity of Darth Vader. having identified anakin's lightsaber skills, military strategy, and interactions with his stormtroopers and the Sith, he was smart enough to not.
Yes. Yoda and Mace Windu had thought and discussed the possibility that there was something wrong about Palpatine. However, the most they ever suspected was that someone around him was the Sith Lord they were looking for.
As powerful as Darth Sidious may have been, it's easy to forget he actually seemed afraid of Master Yoda. As seen in Revenge of the Sith, Palpatine initially thought he could deal with the aged Jedi Master - and then, when Yoda proved able to counter the Sith Lord's Force lightning, he fled.
Jedi Masters Mace Windu, Kit Fisto, Saesee Tiin, and Agen Kolar confronted Chancellor Palpatine upon learning of his secret identity as a Sith Lord.
In the film, we learned that Rey was a Palpatine, and her father was a clone of the infamous Sith Lord. However, it did raise the question of why would Palpatine let one of his clones escape especially since he was later revealed to be a failed clone.
This is confirmed later in the movie when Obi-Wan informs Padme that Anakin killed them. Both are torn apart with hurt and confusion, trying to make sense of something so terrible.
Although Tarkin didn't believe in the Force, he respected Vader a lot, as he was the Emperor's enforcer, and he even grew to admire Vader's way of inducing fear within others.
Yes he did. And the saddest thing is that there was nothing he could do about it. He was broken. The first case is shortly after ROTS when Vader was making his Sith lightsaber.
Rey is Ezra Bridger's Daughter
But that's not to say Del Toro will be playing a new character. I think he's playing an adult Ezra Bridger (from the Rebels TV show). He'd be about the right age, and there have been theories that Rebels will end with Ezra (and Kanan if he's still alive) joining Luke's new Jedi Academy.
He secretly trained an apprentice for when that day came. Sadly for him, the apprentice turned to the light side and was the one responsible for the start of the Galactic Civil War. Vader then started to train apprentices with the consent of Darth Sidious, and his greatest apprentice was the Sith Lady-to-Be Lumiya.
Ezra Bridger (Darth Revan)
Biography. Legend had it that Yoda—a Jedi who became Grand Master—was trained by N'Kata Del Gormo.
1 Darth Sidious
There has been no Sith, as powerful, meticulous, nor as evil as the Emperor himself, Darth Sidious. As previously mentioned, Sidious trained in the Dark Side by Darth Plagueis before Sidious killed Plagueis in his sleep, making Sidious a Sith Master.
Early life. Darth Plagueis was a legendary Dark Lord of the Sith trained by the Sith Master Darth Tenebrous. At some point during his life, Plagueis acquired the protocol droid 11-4D.
Neither lightsabers nor the Force could help Yoda defeat Darth Sidious. Though Yoda was able to keep his adversary on his toes, he was unable to end the conflict, and their duel ended with no clear victor.