Since we don't have much information about this 'first law graphic novel', it's hard to determine the main characters. However, it could be that there is a group of characters. For example, there might be a wise old mentor figure who knows a lot about the 'first law' and guides the younger, more impulsive characters. There could also be an antagonist who constantly tries to undermine the 'first law' for their own gain.
I'm not sure who the main characters are without reading it. But they could be some sort of law enforcers if the story is about upholding the first law.
I'm not entirely sure without more research, but usually there would be a protagonist who drives the story forward. There might also be an antagonist who opposes the protagonist's goals.
The main characters include Logen Ninefingers, who has seen a lot of bloodshed and is trying to find his place in the world. Glokta, the inquisitor, is a complex character who has endured great pain and uses his position in different ways. Ferro Maljinn, on the other hand, is a strong and independent character, often driving the action forward with her determination.
Since the title mentions the blade, there might be a character who is either the creator or the keeper of the blade. There could also be an antagonist who wants to use the blade for evil purposes, contrary to the first law. Maybe there's a young apprentice who discovers the blade and gets caught up in the events related to it.
There could be a tribal leader as one of the main characters. This person would be responsible for upholding the 'law of the desert born' within their tribe. They would have to make decisions that affect the survival and well - being of the tribe members. There might also be an outcast character who challenges the existing law and order in the desert - born society.
I'm not sure exactly who the main characters are in 'first northguard graphic novel' as I haven't read it yet. But usually in a graphic novel like this, there would be a hero or a group of heroes.
Since I don't have access to 'first test graphic novel', it's hard to say for certain. However, in many graphic novels, there's often a central character who faces challenges. Maybe in this one, there's a group of friends where one is the main focus, like a lead character who has some special ability or mission that drives the story forward.
There's usually a security guard who has to deal with the animatronics. And there are also some kids who are related to the story in some way.
Batman himself is of course one of the main characters. He's the Dark Knight, the protector of Gotham. And I'm sure Commissioner Gordon is in there too, being Batman's ally in the police force. Also, there are likely to be some of his villains like the Joker or Penguin.
The main character is surely Morpheus. There are also other important characters like Lucien, who is Morpheus' librarian in the Dreaming. And then there's Cain and Abel, who have their own roles within the story's strange and wonderful world.