Since I don't know the specific 'Returning Cast Christmas Story', I can't name the exact characters. But it could include the main actors or members of the returning cast. There might be a lead character who brings everyone together, and then there could be supporting characters like friends, family members, or colleagues related to the cast in the context of the story.
It could also feature characters like Han Solo or Princess Leia. If it's a fanfic about the return of the Rebellion spirit, they would be prime candidates. There might be new characters created by the fanfic author as well, characters who are intertwined with the returning aspect. For instance, a young padawan who is inspired by the return of a great Jedi and becomes a central figure in the story.
I don't know as I haven't read the novel. But generally, in a story like this, there could be a central character who is the recipient of the thousand favors. There might also be characters who are the givers of these favors, like friends, family members, or strangers who play important roles in the protagonist's journey.
I'm not sure specifically as I haven't read this exact novel. But typically in this kind of end - of - the - world novel, there could be a strong and resourceful male or female lead. They are often the ones driving the story forward, making decisions and facing the challenges of the post - apocalyptic world.
There might be some mentors or guides from the xianxia world who still have an influence on the protagonist even after they have returned. These characters could be important in helping the protagonist navigate their new situation in the normal world.
The protagonist is usually someone who has spent a significant amount of time in the world of immortals. It could be a cultivator who has reached a certain level but for some reason, has to return to the mortal realm.
In the 'Returning from the Immortal World' novel, the main character is likely to be the one who makes the journey back from the immortal realm. There could be other important characters like friends or family members in the mortal world who are affected by the protagonist's return. There might also be antagonists, perhaps from the immortal world who don't want the protagonist to succeed in the mortal world or who are trying to bring them back to the immortal world against their will.
'Return to 79: A Hunting Life in the Mountains' was an urban romance novel written by the extraordinary Junsheng. The story told that after the protagonist Li Shiqiang returned to 1979, he used the experience and knowledge of his previous life to start herding, hunting, picking herbs, and leading his family to live a stable and happy life. The novel depicted the endless mountains of Bashan and the surging Minjiang River. The novel had 165 chapters and a total of 430,000 words, and it was still being serialised.
Well, from what I've heard about this type of web novel, the main character is often a unique individual. He or she may have special powers or abilities gained from the immortal world. There could be antagonists too, perhaps those who envy the main character's powers or those who want to stop the main character from achieving certain goals. And then there are likely to be other characters that form the social fabric of the mortal world that the main character has to interact with upon returning.