I'm not sure as I haven't read the novel specifically, but it could be a young protagonist who is given this one wish. There might also be a wise mentor figure who helps the main character understand the implications of their wish.
Since I haven't read the novel, I can't be certain about the main characters. However, it's likely that there is a central character who is the focus of the story, the one with the one wish. There may also be secondary characters like friends or family members who play important roles in the story, either by influencing the main character's decision regarding the wish or by being affected by the outcome of the wish.
The main theme could be about hope and the power of a single wish. It might explore how a character's one wish can change their life or the lives around them.
Since I haven't read the novel, I can't say for sure. But there might be a character who is the wish - granter, and then there could be those who come to have their wishes granted, like a terminally ill patient, an old person with unfinished business, or someone who has suffered a great loss.
Since I don't know the exact 'a wish novel', I can't say for sure. But it could be a young protagonist who is on a quest related to wishes.
As I haven't read 'the wish novel', I can't be certain about the main characters. However, it's common in novels for there to be a central character who is on a journey, perhaps a person with a strong will and a big wish. There might also be supporting characters like family members or antagonists who oppose the main character's wish.
Since I haven't read the novel, I can't tell who the main characters are exactly. But usually in a novel with such a title, there would be a character who has the wish (the protagonist) and the character they wish to be like.
In 'the wish of the dragon novel', the main characters could include the dragon of course. There may be a wizard or sorcerer who has some connection to the dragon's wish, either helping or trying to manipulate it. And perhaps a young adventurer who stumbles upon the dragon's situation and gets involved in the quest related to the dragon's wish.
In 'the last wish novel', apart from Geralt, Yennefer and Ciri, there are other notable characters. Dandelion, for instance, is Geralt's friend. He is a bard and often gets involved in Geralt's adventures, sometimes causing trouble but also providing some comic relief. Another character is Vesemir, an older Witcher who serves as a mentor to Geralt and the other Witchers at Kaer Morhen.
Often, there is a protagonist who is driven by a strong sense of vengeance or a need to fulfill a certain goal related to their 'death wish'. There might also be an antagonist who stands in the way of the protagonist's pursuit.
Without having read the book, it's impossible to be certain. But it might have a hero or heroine who is on a quest related to their great wish. There could also be supporting characters like friends or family members who either help or hinder the main character in achieving their wish.