It could strengthen their bond. They now have a common responsibility to protect and guide their younger brother. For instance, Thor might take on a more fatherly role, teaching him about honor and courage, while Loki could teach him some of his sly ways to outwit enemies, but also warn him of the dangers of excessive trickery. Their relationship could become more complex as they balance their own differences while raising the younger brother.
The younger brother's existence could initially create some jealousy and competition among them. Thor and Loki might worry that the younger one will get more attention or favor. However, as they face challenges together, like battles against dark forces or political intrigue in Asgard, they realize that they need to work together. Their relationship evolves from one of mild rivalry to a more collaborative and brotherly one, all centered around their younger brother.
When Thor is mean to Loki in fanfiction, it can lead to a downward spiral in their relationship. Loki, feeling constantly attacked, may lash out in more extreme ways. Thor, on the other hand, may double down on his meanness, believing it's the only way to deal with Loki. This can create a cycle of animosity where any love or brotherly bond they had is overshadowed by anger and distrust. For example, Loki could start to form alliances with Thor's enemies out of spite, and Thor would see this as confirmation of Loki's untrustworthiness, making the relationship even worse.
Well, in many such fanfictions, the age difference often makes Loki more naive or inexperienced compared to Thor. This can lead to Thor taking on a protective role towards Loki. For example, Thor might shield Loki from dangerous situations or guide him in understanding the world around them.
Their relationship could have become stronger. After Loki's 'death' in the movie, Thor was devastated. If Loki survived, Thor would likely be more protective of him. They might start to trust each other more fully, putting aside their past differences.
In some fanfiction, it shows a more reconciled relationship between Loki and Thor in Infinity War. Instead of the conflicted and somewhat hostile relationship in the movie, they are shown to be more understanding of each other. Loki might be more open about his fears and Thor more accepting of his brother's past actions.
Loki's relationship with Thor would be filled with mixed emotions. He could be resentful at first for getting into this situation, but as time goes on, he might come to rely on Thor more. They would have to communicate more openly about their feelings and fears, which could strengthen their bond in a different way than before.
Thor might initially go into denial. He can't believe that Loki is truly gone. He may hold Loki's body for a long time, as if waiting for him to come back to life. Then, he could become angry. Angry at the situation, at whoever or whatever caused Loki's death. Eventually, he may find solace in the memories of Loki. Remembering the good times they had together and using those memories to move forward.
In many Thor Loki Avengers fanfictions, Loki's character development often starts from a place of being the villain. He then gradually realizes the value of his relationships, especially with Thor. For example, in some stories, after seeing the loyalty of the Avengers to each other, he begins to question his own actions. He might start to show remorse for his past deeds like the attack on New York.
One possibility is that the younger brother could be a source of both chaos and unity. He might be initially jealous of Thor and Loki's fame and power, causing some internal family strife. For example, he could try to outdo them in heroic deeds in a rather clumsy way, leading to comical situations. But in the end, when faced with a great threat to Asgard, he realizes the importance of family and uses his unique skills, perhaps some kind of hidden magic or strategic thinking, to help Thor and Loki save their home.
It can change their relationship in many ways. For some Avengers, like Captain America, it might be a bit of a shock at first, but his sense of fairness and respect for all would lead him to quickly accept Loki. This acceptance would then deepen their relationship, as Loki would see Cap as someone who respects them for who they are. For others like Tony Stark, he might be more intrigued than shocked. He would likely see it as another aspect of Loki's complexity and might start to view Loki in a more multi - dimensional way, which could lead to a more positive and collaborative relationship.
These fanfictions typically show their relationship as something that has to be hidden from the rest of Asgard. It adds an element of secrecy and danger. The relationship is also often portrayed as a way for both characters to find solace in a world that doesn't always understand them. Loki's cunning and Thor's power are intertwined in a way that makes their connection unique and captivating.