In 'Horus Heresy', Horus is a key figure. Once a great and loyal primarch, he turns against the Emperor, leading to a galaxy - spanning civil war. There are also other primarchs like Roboute Guilliman who play important roles in trying to save the Imperium. In addition, characters like Loken, a Space Marine of the Luna Wolves, are central to the story as they witness the fall of Horus from the inside.
In 'Necromunda', Kal Jerico is a well - known character. He's a bounty hunter in the dangerous underhive. He has to deal with various gangs, mutants and other threats while trying to make a living. And in 'Gotrek & Felix', Gotrek Gurnisson, the Dwarf Slayer, and Felix Jaeger, the human swordsman, are the main protagonists, constantly seeking glory and adventure in a dark and dangerous world.
In 'Gaunt's Ghosts', the main character is Colonel - Commissar Ibram Gaunt. He's a complex leader who has to balance military strategy with the Imperium's strict ideology.
I'm not sure specifically as I haven't read this graphic novel. But it could be Space Marines. They are often central in Warhammer 40K stories related to big events like Exterminatus.
In 'Malus Darkblade', the central character is Malus himself. He is a complex character, a dark elf with his own ambitions and desires. He has to face many challenges, both internal and external, as he tries to achieve his goals in the dangerous world of the Warhammer Fantasy.
I'm not sure exactly, but it could be the leaders of the death squadron.
In the 'Horus Heresy' series, Horus Lupercal is a central character. He was once a great and noble Primarch who ultimately turned to Chaos. Another important character is Roboute Guilliman, the Primarch of the Ultramarines. He is known for his strategic genius and his efforts to preserve the Imperium.
There are many main characters. Some are powerful warriors from different races, like the noble knights and the fierce orcs.
There are likely to be Space Marines as main characters. They are often the heroes in the Warhammer stories, fighting against the forces of chaos.
One of the main characters is Sevatar. He is a central figure in the Night Lords legion and plays a significant role in their actions and politics.
The main character is likely Stormhammer. He could be a human with extraordinary abilities. Alongside him, there might be a mentor figure, someone who has trained him in the ways of war and magic. There may be a love interest as well, a female character who gives him emotional support and might also be involved in the battles in some way. And then there are the villains. Maybe a group of dark knights who have sworn allegiance to the forces of evil and are constantly hunting Stormhammer. Each of these characters would play a role in the complex plot of the novel, driving the story forward through their actions, decisions, and relationships.
I don't know for sure, but it could be the Space Marines. They are often central characters in Warhammer 40k stories.
One of the main characters is Ciaphas Cain. He is from the 'Gaunt's Ghosts' series. He is a bit of a reluctant hero, always getting into and out of trouble in the most interesting ways.