If Loki becomes an Avenger in fanfiction, it would be a wild ride. He'd bring his complex personality to the team. His relationship with Thor would also be an interesting aspect. They could have brotherly moments within the team dynamic. Loki might also start to develop real friendships with the other Avengers, which would be a big change for him.
It might be. There are so many Avengers fanfictions out there that it's hard to say for sure. However, given Loki's popularity, it has a good chance. If the fanfiction delves deep into how Loki would interact with the other Avengers, like his banter with Thor or his strategic mind against the likes of Iron Man, it could be a hit. Also, if it shows his growth as a character within the Avengers team, it could attract a large number of readers.
The popularity of Thor x Loki fanfiction lies in their complex relationship. They are brothers but also have a lot of conflict. Fans like to explore how they can reconcile or what makes their relationship so strained.
One possible plotline could be Loki trying to redeem himself in the eyes of the Avengers. He has a long history of causing trouble, so it would be a journey of him making amends. Another plotline could be Loki using his knowledge of the Asgardian and other realms to help the Avengers face a threat from those areas. For example, a new powerful enemy from the Nine Realms emerges and Loki's insights are crucial in the fight.
Loki's character would develop in a very interesting way as an Avenger. He would likely start off as a bit of an outcast, still having his devious tendencies. But over time, the Avengers' sense of justice and camaraderie might rub off on him. He could learn to use his trickery for good, like using his illusions to deceive enemies instead of his teammates. His relationship with Thor would also be a major factor. They might go from being at odds to a more brotherly bond within the team, which would contribute to his overall character growth.
If Loki becomes an Avenger in fanfiction, his character would undergo a significant transformation. He'd have to learn to work with others, which is not his strong suit. This would force him to be more patient and understanding. His view of power might also change. Instead of seeking power for his own gain, he could start to see power as a means to protect the weak. His relationship with the Avengers would gradually reshape his identity, making him more of a hero than a villain in the process.
We might expect to see Loki trying to fit in with the Avengers. He could start off as a reluctant member, perhaps forced to join due to some external threat. There could be a lot of tension as the other Avengers don't trust him at first. Then, as the story progresses, he might gradually earn their trust through his actions, like using his magic to save the day or providing crucial information about an enemy.
In some fanfictions, the 7th Avenger could be a time - traveler from the future. This person has come back to prevent a major disaster that the Avengers couldn't handle without their help. They know all about the future events and use this knowledge to guide the team, but also have to be careful not to change the timeline too much.