Ahsoka Tano is also a main character. She is Anakin's Padawan and has her own adventures and growth throughout the Clone Wars. Another important character is Obi - Wan Kenobi. He is a wise Jedi Master and is involved in many of the battles and diplomatic efforts during the war.
In the Star Wars The Clone Wars Novel, the main characters include Anakin Skywalker, who is on his path to becoming Darth Vader. His master, Obi - Wan Kenobi, is there to guide him, or at least try to. Then there are the clone troopers. They are not just faceless soldiers but have their own personalities. Captain Rex is a great example. On the other side, Dooku is a major character. He is the leader of the Separatist Alliance and a Sith Lord. His actions drive much of the conflict in the novel.
Anakin Skywalker is a main character. He is a powerful Jedi Knight who plays a crucial role in the Clone Wars. Obi - Wan Kenobi is also important, being Anakin's master and a skilled Jedi. Then there's Ahsoka Tano, Anakin's padawan. And of course, there are characters like Count Dooku on the Separatist side.
One of the most interesting could be a Jedi apprentice who has a unique connection to the Force. This character might be able to communicate with animals in a way that no other Jedi can. Another could be a clone trooper with a hidden artistic talent. He might use his skills to create beautiful murals on the walls of the clone barracks, adding a touch of humanity to the otherwise military - dominated setting. And then there's the mysterious bounty hunter who has a code of honor that sets her apart from the typical mercenaries in the Star Wars universe.
One possible fem clone OC could be a highly skilled sniper. In fanfiction, she might have unique markings on her armor that distinguish her from the male clones. She could befriend some of the Jedi, like Ahsoka Tano, and together they face various challenges during the Clone Wars.
Ezra Bridger is often a great character in fanfics. His growth as a Jedi and his role in the Rebellion make for interesting storylines. Writers can explore his connection to the Force in new and exciting ways.
Anakin Skywalker is a main character. He is a powerful Jedi Knight in the Clone Wars. Obi - Wan Kenobi also plays a major role. And of course, the Clone Troopers are very important characters in the story.
Clone Troopers like Captain Rex are main characters too. They are on the front lines of the war, following orders but also having their own personalities and loyalties. Darth Maul makes an appearance as well, adding the element of the Sith's malevolence. And then there are the various senators and political figures who are involved in the decision - making and power struggles during the Clone Wars.
I really like Clone Trooper Fives. He has a bit of a mischievous streak that could be played up in a funny fanfiction. For example, he could play pranks on his fellow clones by switching their equipment around or making up wild stories about the enemy.