Another theme is redemption. Many fanfics show Loki having a chance to redeem himself in the MLP world. Maybe he's made some mistakes in his own world, but in the world of ponies, he gets the opportunity to start anew and be a better 'being'. The ponies' positive influence helps him in this journey.
The theme of friendship also pops up a lot. Since friendship is such a huge part of MLP, fanfic authors like to explore how Loki, who may not be used to the concept, comes to understand and value friendship in the pony world. It could be through his interactions with Twilight Sparkle or other ponies that he starts to see the beauty in having true friends.
A common theme is the clash of cultures. Loki, being from Asgard, has a very different set of values and behaviors compared to the ponies in MLP. This can lead to misunderstandings and comical situations.
One common theme is Loki's mischievous nature being translated into his cat form. For example, he might play pranks on the other characters in the story. Another theme could be his relationship with other Avengers in his cat guise. Maybe Thor is trying to figure out that it's Loki in cat form.
Love and attraction are also very common themes. Writers like to explore the relationship that could develop between Loki and the reader, whether it's a slow - burning love or a sudden, intense attraction. It often involves a lot of emotional turmoil as Loki has his own issues to deal with. For example, in some fanfics, the reader has to break through Loki's emotional barriers to reach his true self.
One common theme is the complex brotherly relationship between Thor and Loki. It often shows their love - hate dynamic, with moments of loyalty and betrayal. Another theme is redemption. Loki is often depicted as trying to atone for his wrongdoings. For example, in many fics he might be trying to make up for his attempts to take over Asgard. And power is also a theme. Thor's brute strength and Loki's more devious power - seeking are often explored in relation to each other.
One common theme is identity. Since female Loki is often a different take on the well - known Loki character, exploring who she is, her place in the Asgardian or Marvel world is a big part. Another theme is power. How she wields her magic and influence in different situations. For example, in some fanfics she uses her power to change the course of events in Asgard.
One common theme is self - discovery. Both Loki and Sylvie are complex characters, and in many fanfics, they are on a journey to understand themselves better. For example, they might learn about their true nature as variants and how that shapes their identity.
Brotherhood is also a big theme. Since they are brothers, fanfics often focus on the love - hate relationship between them. They might fight and be at odds, but ultimately there is a deep connection that ties them together, like in stories where they have to rely on each other to defeat a common enemy.
Well, in 'animal Loki fanfic', there's often the theme of magic. Since Loki is a master of magic, even in animal form, his magic is still a big part of the story. He might use his magic to communicate with other animals, or to change his animal form in some way. And then there's the theme of outcast. Just like in his normal form, Loki as an animal may be seen as an outcast, which leads to his journey to find his place either among the animals or back in the world of the gods.
One common theme could be the changes in Loki's relationships, like how his friends or family react to his situation. Another might be his own internal struggles with this new state.
A common theme is brotherhood. Loki and Thor are siblings, and many fanfics explore their complex relationship, like how they forgive each other's mistakes. Another theme is redemption. Loki has done some bad things, and in fanfics, he often tries to make up for it. Power is also a theme. They are both powerful gods, and fanfics may show how they use or struggle with their power.