Rebel leaders are also common main characters. They are the ones who challenge the status quo of the 5th imperium. They have to be very charismatic to gather followers and smart enough to outwit the imperial forces.
There could also be some sort of prophets or seers. In the complex world of the 5th imperium, they might be able to foresee events that are going to impact the future of the imperium. Their role would be to either guide the people or be ignored at the peril of the imperium.
Roboute Guilliman is one of the main characters. He plays a crucial role in the Imperium's affairs. Another important character could be some of the Chaos Lords who oppose the Imperium.
Typically, the main characters would be the pregnant character from the '7th heaven' series, along with her immediate family members like her parents, siblings, and maybe the potential father of the baby if he's a main part of the story.
Since we don't have more details about the 'imperium novel', it's hard to say for sure. But typically in a novel about an imperium, there might be a powerful emperor or empress as a main character. There could also be generals who lead the imperium's armies, or perhaps a young rebel who is fighting against the oppressive rule of the imperium. There may be a wise advisor or a mysterious figure who holds some key to the future of the imperium.
Harry, Ron, and Hermione are almost always main characters. They continue their journey together in the 8th year. Ginny Weasley also often plays a significant role, especially in relation to Harry. Neville Longbottom might be another important character as he has proven himself during the war and could be involved in rebuilding Hogwarts.
Some of the main characters in the 'Dark Imperium' story include Guilliman. He is a very important figure in the Imperium. There are also various Chaos Lords who are the antagonists, constantly trying to undermine the Imperium.
I don't know the main characters in 'imperium graphic novel' as I haven't read it. Maybe there's a fearless leader, a rebel trying to change the system, or a wise old mentor figure.
In the Dark Imperium novels, there are several main characters. For example, Guilliman is a central figure. He is a Primarch who has returned to lead the Imperium in a time of great need. Then there's Yvraine, an important figure among the Aeldari. She has her own motives and plays a significant role in the events that unfold. There's also Mortarion, a powerful Chaos lord who is an adversary in the story. These characters' interactions and conflicts drive much of the plot.
There's Guilliman, a very important character. He plays a significant role in the events of the Imperium.
Guilliman is one of the main characters. He plays a crucial role in trying to save the Imperium. Also, there are other Space Marines and some Imperial officials who are important in the story.
In 7th grade short stories, the main characters are mostly kids in that grade level. There could be a new kid in school who is the focus, trying to adapt to a new environment. There may also be a character who has a conflict with their parents about their grades or their choice of activities. And then there are those characters who are in the middle of a friendship drama, like two friends who start to grow apart because of different interests or the influence of other classmates.