Since I haven't read the 'nightbringer 40k novel', I can't say for sure. However, in the Warhammer 40K universe, it could be that a powerful psyker is one of the main characters. They might be trying to counter the power of the Nightbringer. Or perhaps a high - ranking officer in the Imperium's military who is tasked with dealing with the chaos that the Nightbringer brings. There could also be a character from an alien race who has some unique knowledge or ability related to the Nightbringer.
I'm not familiar with the specific main characters in the 'nightbringer 40k novel'. But thinking about the Warhammer 40K genre, it's possible that there is a heroic Space Marine Captain as one of the main characters. He could be leading his troops against the threat of the Nightbringer. Another character might be a tech - priest, with their knowledge of ancient technology, trying to find a way to use some long - lost weapon or device to combat the Nightbringer. And there could be a rogue trader who has some valuable information about the Nightbringer from his travels across the galaxy and gets involved in the fight against it.
I'm sorry I don't know exactly who the main characters are in the 'nightbringer 40k novel' as I haven't read it. But in Warhammer 40K novels, main characters can be Space Marines, Imperial Guardsmen, or various xenos characters.
I'm not entirely sure as I haven't read it specifically. But generally, in the Warhammer 40K universe, novels often involve epic battles, complex characters, and the struggle for power among different factions. It might be about the deeds of the Nightbringer, perhaps its role in a particular war or its impact on the galaxy.
Sadly, I can't tell you who the author of the 'nightbringer novel' is. It could be a new and upcoming writer or someone who has written many other works but this particular one hasn't gained widespread attention yet in the sources I'm aware of.
The 'nightbringer novel' could potentially be about a being that brings the night, either literally or metaphorically. It might explore themes like darkness, change, or the unknown. Maybe it's set in a world where this nightbringer has some sort of power or mission that drives the plot, such as causing chaos or bringing a new order under the cover of night. There could be characters who either oppose or follow this nightbringer, and their relationships and struggles would form the core of the story.
There's Kuroh Yatogami. He has his own set of abilities and plays a significant role in the narrative. Another important character is Neko, who also has special powers and her presence adds a lot to the story. These characters interact with each other in various ways, driving the plot forward.
One of the main characters is Roboute Guilliman. He plays a crucial role in the story.
Since I haven't read the novel, I can't say for sure who the main characters are. However, in Warhammer 40k novels, there are often soldiers, psykers, or leaders. It could be a young Space Marine initiate whose innocence is tested, or a civilian caught in the crossfire of a planetary invasion.
The main character is likely the dark apostle himself. There may also be other chaos - aligned characters like cultists who follow the dark apostle, and perhaps some adversaries from the Imperium of Man who are trying to stop the dark apostle's plans.
There's no way to know for sure who the main characters in the 'grand k visual novel' are without more details. However, it's common for visual novels to have a protagonist who drives the story forward. There might also be a supporting cast of friends, family members, or antagonists that interact with the main character in relation to the 'grand k' concept.
There might be a Chapter Master as one of the main characters. He would be in charge of leading the Imperial Fists, making crucial decisions in battles and for the future of the Chapter.
I'm not entirely sure as I haven't read the exact Dark Son 40k novel. But in many Warhammer 40k novels, there are often Space Marines as main characters. They are genetically enhanced super - soldiers. There could also be some Imperial Guardsmen, who are the regular soldiers of the Imperium. And perhaps some alien species as antagonists or even some Chaos - influenced characters.