Definitely Anakin Skywalker. He's the one who goes through the most drastic change. Then there's Palpatine, the mastermind behind the Sith's plan. Obi - Wan Kenobi, who has to face his former apprentice. And Yoda, the wise Jedi Master who tries to counter the Sith's plot. Also, Padmé, whose love for Anakin is a key factor in the whole drama.
Anakin Skywalker is the most important character. His internal conflict and fall to the dark side drive the narrative. Palpatine, as the Sith Lord, is essential as he engineers the downfall of the Jedi and the Republic. Obi - Wan Kenobi, a symbol of the Jedi Order, is important as he battles Anakin in the end. Padmé Amidala is also a major character as her relationship with Anakin and her political position add layers to the story. For example, her pregnancy and her attempts to save Anakin from the dark side are all important elements in the novel.
In this graphic novel, Anakin Skywalker is crucial. His journey from a Jedi Knight to Darth Vader is what the story is largely about. Palpatine is also extremely important as he is the mastermind behind Anakin's fall. And Padmé Amidala, as her relationship with Anakin affects his decisions.
The Emperor, of course. He is a central figure in the Sith hierarchy. His manipulations and his grand schemes play a major role in the events of the novel. There are also other Sith acolytes and those who oppose the Sith, like some of the Rebel forces. These characters add depth to the story as they either support or fight against the Lords of the Sith. They bring out different aspects of the conflict between the Sith and the rest of the galaxy.
Anakin Skywalker is a main character. He is the one who undergoes the major transformation in the story, from Jedi to Sith. Obi - Wan Kenobi is also important. He is Anakin's mentor and later has to face him. Padmé Amidala is a key character too as Anakin's love interest.
Definitely, it's canon. Revenge of the Sith is an integral part of the Star Wars storytelling, adding depth and context to the overall saga.
The plot of Revenge of the Sith centers around the final stages of the Clone Wars and Anakin Skywalker's descent to the dark side. It's a complex and intense story with lots of action and drama.
Rey is the most prominent character as the fanfictions are often centered around her and the Sith. Luke Skywalker can be quite popular too. He can be a guiding figure for Rey, or in some fanfictions, he has a different view on the Sith and Rey's potential connection to them. Maul is also a favorite. His unique look and his own journey in the Star Wars lore make him an exciting addition to stories involving Rey and the Sith. Writers might have Maul's spirit or some remnant of his power interact with Rey as she delves into the world of the Sith.
Shaak Ti. She was a powerful Jedi, but not much was explored about her in the movie. In fanfiction, you could delve into her backstory, her relationships with other Jedi, and how she might have reacted to the events of the Clone Wars and Anakin's fall. For example, she could have had a secret mission to uncover the Sith's plot that was cut short by Order 66.
One of the main themes is the fall of Anakin Skywalker. His journey from a Jedi Knight to Darth Vader is central. Another theme is the collapse of the Republic. The political intrigue and manipulation that lead to its downfall are explored. Also, the theme of friendship and betrayal is there, as Anakin betrays his friends and the Jedi Order.
In Clone Wars fanfiction, Darth Maul stands out. He was initially thought to be dead after 'The Phantom Menace' but his return in Clone Wars brought a new level of danger. His thirst for revenge against Obi - Wan Kenobi and his attempts to regain his former power are common themes. Darth Sidious is also key. His devious plans to create chaos and gain ultimate power are often explored in fanfiction. He was using the Clone Wars as a means to an end, and fan writers love to play with the idea of what his true endgame was.
The Sith Lords themselves are main characters, of course.