Koko Hekmatyar is a very notable character. She is a young and brilliant arms dealer. She has a charming yet dangerous personality. She's able to navigate the complex world of arms trading with ease and is highly intelligent, always one step ahead of her opponents.
Jonah is another important character. He is a child soldier who has a complex past. He becomes involved with Koko's operations. His moral compass is constantly tested as he is in the middle of the arms dealing world, which is full of moral grey areas.
Well, obviously the child of Jormungand would be one of the main characters. There might also be characters who are guardians or mentors to the child, guiding them through their journey. And perhaps there are antagonists who oppose the child because of their lineage.
One of the main themes is the exploration of the world of arms dealing. It shows the complex and often murky world of international arms trade, including the power dynamics and moral ambiguities involved.
Then there's Alexis Douse, who is part of the ruling class and his actions and motives are crucial in understanding the political side of the Grancrest War. His character is complex as he has to balance his personal ambitions with the needs of his faction in the context of the ongoing war.
The archmage himself is obviously a very notable character. He's likely the central figure around which the story revolves. There may also be a mentor figure, someone who guides the archmage in his early days of learning magic.
The protagonist is of course a notable character. His journey and development are central to the story. There may also be a mentor - like figure who helps him understand the isekai world better.
Well, surely the empresses themselves are notable characters. Each empress would have her own personality, goals, and backstories that shape her actions in the palace.
There could also be an antagonist or a group of antagonists. They would be the ones creating obstacles for the main character and other protagonists. Their actions and motives would be crucial to the development of the mystery and the story as a whole. They might be trying to prevent the riddle from being solved for their own gain or to maintain some sort of power or control within the world of the light novel.
Well, Nero Claudius is a very important character. She is a Servant with a regal and powerful presence. Her relationship with Hakuno Kishinami is an interesting aspect of the story. Then there's Tamamo no Mae, another Servant. She has a charming and somewhat devious personality. These characters, among others, contribute to the rich tapestry of the Fate Extra Light Novel.
Ainz is the most notable character. He is the powerful overlord who is trying to make his mark in the new world. His decisions drive the overall plot. Then there are the floor guardians in Nazarick like Albedo, who is extremely loyal to Ainz and often has her own ideas about how to serve him better.
Ayato Amagiri is a very notable character. He has strong combat abilities and is a key figure in the story's battles.