Definitely the Avengers as a whole group or at least some of the key members. On Loki's children's side, if it's a more in - depth exploration, it could involve all of his known children. But if it's a simpler story, maybe just one of them like Jormungandr, the sea serpent. Jormungandr could bring a whole new element to the story, perhaps causing trouble in the oceans which would draw the attention of the Avengers, especially those with ties to the sea or aquatic environments.
The Avengers are a must - they are the heroes of the story. For Loki's side, his children who have their own distinct traits. If the story focuses on the more well - known children, then Fenrir, the giant wolf, would be a major character. He has great strength and could pose a real threat or an interesting ally. Also, Thor might have a special connection or conflict with him due to his relation to Loki.
Obviously, the Avengers like Iron Man, Captain America, Thor etc. would be main characters. And Loki's children, whoever they are in the fanfiction's interpretation. Maybe there would be a new character created specifically for this story as well who becomes important in the interactions between the two groups.
The plot might involve Loki's children being in a situation where they need the Avengers' help. Since the Avengers are known for protecting the Earth and the universe, they could get involved. There could be a lot of character development as the Avengers learn about Loki's children and vice versa. It could also explore how the Avengers' values might clash with those of Loki's kids at first.
Loki and Thanos are the central figures. However, characters from Loki's family such as Thor could also be significant. Thor might notice the changes in Loki and try to rescue him from Thanos' control. Additionally, characters like Heimdall, who has the ability to see across the realms, could be involved in detecting Loki's unusual behavior and Thanos' influence.
I think it could be Star - Lord. He's often looking for an edge in any situation, and Loki could offer some unique opportunities. They could form a sort of uneasy alliance where they both try to use each other for their own goals. Star - Lord might see Loki as a valuable asset in terms of his magic and knowledge of other worlds, while Loki could use Star - Lord's leadership skills and connections within the Guardians. However, they would constantly be on guard against each other's double - crosses.
Well, obviously Harry would be one of the main characters as the story seems to revolve around him being the son of a god and Loki. Loki himself would also be a significant character. He could be a complex figure, perhaps mentoring Harry in some ways while also having his own devious motives. And then there would likely be other gods and goddesses who interact with Harry, either as friends, foes, or relatives.
Obviously, Naruto and Jiraiya would be the main characters. Naruto, the protagonist of the original series, and Jiraiya, his mentor. They have a deep connection, and any fanfiction about them meeting would revolve around their relationship.
Well, obviously Nero and Sparda are the main characters. Nero, with his white hair and his Devil Bringer arm, is a key figure in the Devil May Cry series. He's known for his brashness and his strong sense of justice. Sparda, on the other hand, is a legendary demon. He's the father of Dante and Vergil. He's a very powerful and mysterious character. In this fanfiction, their encounter would be the central focus, and their different personalities and powers would drive the story forward.
Obviously, Draco Malfoy and Dudley Dursley are the main characters. Draco, with his blond hair and aristocratic air, is a well - known Slytherin from the Harry Potter series. Dudley, on the other hand, is Harry's cousin, a rather large and spoiled Muggle boy. Their encounter would be the central focus of this fanfiction.
Most likely, Tom from Tom's world and Edd from Edd's world would be main characters. They are the central figures in their respective worlds and would probably drive the story forward when the two worlds meet.
The main characters are Yugi and Yusaku. Yugi is a character with a long history in the Duel Monsters universe. He has a group of friends and has faced many challenges. Yusaku, on the other hand, is more of a loner who uses his hacking skills in dueling. In the fanfiction, they will be the central focus as their paths cross and they interact with each other. Their different personalities and dueling styles will drive the story forward, whether they become friends, rivals, or a combination of both.