Even in the old Star Wars canon, the two had a confrontation, as they met in the comic book Star Wars Tales #9, where Maul pieced together that Anakin was Vader.
Darth Maul and Darth Vader never met in the Star Wars canon, although Maul and Anakin Skywalker were heavily involved in key events of the Clone Wars. That includes the Siege of Mandalore, in which Anakin would have participated had it not been for the Chancellor's kidnapping.
In the main Star Wars canon, Darth Vader and Darth Maul never met, let alone fought. When Obi-Wan Kenobi defeated Darth Maul in Star Wars: Episode 1 - The Phantom Menace, Anakin was still a kid and just joined the recently crowned Jedi Knight as his apprentice.
Darth Maul knew that Anakin Skywalker was the so-called Chosen One, and that he had been groomed by Darth Sidious to become his new apprentice, Darth Vader.
In a way, Maul's mission during the final days of the Clone Wars was to stop Darth Sidious' rise to power. To do that, Maul planned to ambush Anakin Skywalker on Mandalore during the siege of the planet and kill the Jedi who would become Palpatine's new Sith apprentice and ultimate weapon.
Darth Maul and Obi-Wan's long-standing rivalry started in Episode 1 and lasted all the way until Star Wars: Rebels. Throughout his lifetime, Maul seemed to hate Kenobi! Every time Maul says Kenobi.
Fandom. Question: Did Maul know Sidious was Palpatine? In legends he did. In the darth plagueis novel I'm pretty sure there's a part where maul was reflecting on his master's political machinations and how he is publicly known as palpatine.
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.
Darth Maul died during a final battle with Obi-Wan in the Rebels TV series, and Palpatine couldn't have cared less. For him, finding and killing Maul for his failure simply wasn't worth the effort.
Reva knows that Anakin Skywalker is Darth Vader because she was one of his targets—a child—during the Order 66 killings that took place during the events of Star Wars Episode III: Revenge of the Sith.
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.
Darth Maul feared Vader in the same way as anyone would. Vader was the most notorious and ruthless figure in the Empire, using his rage and anguish to fuel his resolve, enabling him to dispatch his enemies without compassion or remorse.
By the time of Episode 3; Anakin is in his prime, and already one of the Jedi Order's most powerful “masters” (although technically still a knight), just behind Obi-Wan, Windu, and Yoda. Maul wouldn't stand a chance. Anakin stomps.
Anakin and Obi-Wan confront General Grievous on the bridge of the Invisible Hand as it wages battle against Republic warships over Coruscant.
Maul and Grievous met in single combat, while the two armies collided and suffered heavy losses. By the battle's end, Maul ordered his forces to retreat, while the Sith waited for him to find Mother Talzin.
Thought dead, Darth Maul survived his injuries by focusing on his hatred of Obi-Wan Kenobi, the Jedi who cut him in half. His shattered body was dumped amid the refuse of the junk planet Lotho Minor, where the once deadly warrior fell into madness, staying alive on a diet of vermin.
However, Maul's hatred of the Jedi was more personal. He was filled with anger when he realized that as a child, the Jedi had not come for him. Maul did not know if they found him unworthy or simply ignored him, and their neglect fueled his rage, counting the days until he could have his revenge.
Later stripped of his black Nightbrother markings, Maul was left solely red-skinned. Agonizing Sith tattoos were applied personally by Darth Sidious in an attempt to cleanse Maul's mind as well as demonstrating Maul's complete dedication to the dark side.
Dooku defeated Obi-Wan, but Anakin in turn disarmed him, severing his hands and holding his sabers at the count's neck. To Dooku's shock, his secret master then told Anakin to kill him. Sidious had indeed betrayed Dooku, and a flick of Skywalker's wrists ended the count's life.
Anakin does not have even the slightest bit of remorse. By the end, he feels nothing but anger. Although he feels regret for killing Padme, he still helps the evil Emperor. The film ends with Anakins standing side by side with the man on whose behalf he has committed all his crimes.
“The tear [on Anakin's face] says that he knows what he's done, but he has now committed himself to a path that he may not agree with… but he is going to go on anyway. It's the one moment that says he's self-aware that he's rationalizing all his behavior.
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.
Bottom line, Dooku never considered himself a Sith. And he wasn't; he was a man looking to change the galaxy in a way the Jedi were unwilling to try. And that is why he joined the Sith and became Darth Sidious' apprentice, Darth Tyrannus. When Dooku became Sidious's apprentice, he was already an elderly man.
Regardless, Dooku's eyes weren't yellow because he wasn't motivated by anger. He was merely a practical dark side user, so he does not have the usual Sith eye color.
In the novel, Dooku remains silent when Sidious tells Anakin to kill him, because he finally realised, that he had been replaced. His master has found a new apprentice, younger, filled with more rawness and power to destroy the Jedi.