There's also Strangman. He is an interesting character who has a different approach to the drowned world compared to Kerans. Strangman seems more interested in exploiting the situation for his own gain in some ways, which creates conflict within the story. Another character is Beatrice Dahl, who has her own role in the complex web of relationships and the overall story of survival in this new world.
The main character is the drowned man himself. And the villagers are also important characters as they are the ones who discover him, interact with him (even though he's dead), and whose lives are affected by his presence.
Mat Cauthon is an important figure. He is Rand's friend, with a roguish charm and a mysterious connection to a dagger that brings him both trouble and power. Egwene al'Vere is also crucial. She is a strong - willed woman who begins to learn magic and has her own journey of growth and discovery in the story.
I'm not sure specifically as I haven't read this exact 'home and the world novel'. But usually, there would be a protagonist who serves as the main lens through which we view the relationship between home and the world. This character might be someone who is caught between the two, trying to navigate their place in both.
The protagonist is surely an important character. They are often the center of the story, through whose eyes we experience the events in the novel.
The protagonist, Haruyuki Arita, is very important. He is an overweight boy in the real world but becomes a powerful figure in the accel world. Then there is Kuroyukihime. She is a skilled and mysterious girl who plays a crucial role in Haruyuki's journey in the accel world.
In this novel, perhaps there is a rebellious character who challenges the existing order and is at the forefront of the awakening. There might also be a family member of the main character, like a parent or sibling, whose relationship with the main character is affected by the awakening process. And then there could be a mysterious character who appears at crucial moments and has some kind of special knowledge related to the awakening.
Calantha is also significant. She is Henry's wife and her character helps to show the role of women in this world, both in terms of their relationships with men and their own agency within the constraints of the society.
Since I haven't read the novel, it's difficult to say who the main characters are. But I would assume that the half - drowned king is one of the main characters. There might also be his loyal servants or advisers who help him through his post - drowning situation, or perhaps his enemies who take advantage of his weakened state.
I don't know for sure as I haven't read it. Maybe there's a brave survivor who is trying to lead others to safety in the drowned city.
There's Roberta Muldoon. She is a transgender character, which was quite revolutionary for the time the book was written. Her friendship with Garp adds depth to the story. Also, Helen Holm, Garp's wife, is an important character as she plays a significant role in Garp's personal and family life.