Often, soldiers are main characters. They are the ones facing the terrors on the front lines. They might be ordinary soldiers or elite warriors. For instance, a grizzled veteran who has seen many battles but is now confronted with a horror he can't explain.
Villagers sometimes play important roles too. They are the innocent bystanders caught in the crossfire of the horror. Their reactions to the terrors, whether it's cowering in fear or bravely trying to fight back, can shape the story. For example, a group of villagers might band together to fight off a horde of undead that has risen near their homes.
Sigmar is a main character. He's a powerful leader. Another is Nagash, a necromancer. There's also Malekith, the Dark Elf leader.
In the Sigmar story, Sigmar himself is the main character. He's a strong - willed and fearless leader. His companions like Alaric the Mad also play important roles. They fight alongside Sigmar against the forces of chaos.
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.
The Space Marines are often main characters. They are genetically enhanced super - soldiers, highly trained and loyal to the Imperium. They come in different chapters, each with its own specialties and traditions.
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.
There are many main characters. For the Empire, there are heroic knights like Karl Franz. Among the orcs, there are powerful warlords. Dwarven thanes also play important roles.
Nagash is a central figure in many of the novels related to necromancy and the undead. He is extremely powerful and his actions drive a lot of the dark magic - related plotlines. There are also characters like Karl Franz, the Emperor of the Empire, who has to deal with threats from all sides, be it Chaos invasions or Greenskin raids. He is a symbol of leadership and order in the Warhammer Fantasy 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.
The Space Marines are very common main characters. They are genetically enhanced super - soldiers, and their stories often revolve around their missions to protect the Imperium.
One of the main characters is often the Tomb King himself. He is the undead ruler with great power and a thirst for restoring his lost kingdom. There are also the powerful Liche Priests who play important roles in the stories, using their magic to aid the Tomb King.