Sometimes, Marinette and Alya are a common pair too. Alya is Marinette's best friend, but they have different personalities. A body swap between them can show how they each deal with the other's responsibilities, like Alya trying to handle Marinette's crush on Adrien and Marinette experiencing Alya's love for journalism.
Marinette and Adrien are also quite common. Since they are the civilian identities of Ladybug and Chat Noir respectively, a body swap between them can add a whole new level of drama. They already have a complex relationship, and the body swap can make it even more complicated as they try to navigate each other's lives while keeping their true identities hidden.
Ladybug and Chat Noir are the most common pair in body swap fanfiction. Their dynamic as superhero partners makes it really interesting to explore what would happen if they were in each other's bodies. They have different powers and personalities, so the body swap can lead to a lot of chaos and also some character development.
One interesting plot could be that Ladybug and Chat Noir swap bodies. They then have to figure out how to use each other's powers effectively while also keeping their identities a secret from their enemies. It adds a whole new layer of comedy and confusion to their fight against Hawk Moth.
Ben and Gwen are very likely. They are the main characters and have very different personalities and abilities, so swapping them would create a lot of interesting scenarios. Ben is more action - oriented and Gwen is more into magic and knowledge, so seeing them navigate each other's worlds would be exciting.
Definitely Ladybug and Chat Noir. They are the central characters, and a Kwami swap for them means a whole new set of challenges and adventures. For example, how they interact with each other when they have different powers and how they adapt to the changes. Also, Rena Rouge could be an interesting character to focus on in Kwami swap fanfiction. Maybe she gets involved in helping the heroes deal with the consequences of the swap, or perhaps her own Kwami gets swapped in some way, adding another layer of complexity to the story.
One common theme is self - discovery. When the characters swap lives, they get to see themselves from a different perspective and learn new things about their personalities. For example, Marinette might realize something about her leadership skills when in Adrien's shoes.
Tony Stark and Steve Rogers are a very popular pair. Their contrasting personalities, with Stark being the brash playboy inventor and Rogers the moral - centered soldier, make for great body - swap scenarios. Another popular pair is Thor and Loki. Their complex relationship as brothers adds a lot of depth to body - swap stories. And Hulk and Bruce Banner also feature often. The duality of the man and the monster in one body is an interesting concept to play with in a body - swap setting.
Harry and Draco are quite common. Their contrasting personalities and the whole Gryffindor - Slytherin rivalry make it an appealing combination for body - switch scenarios.
Hawk Moth is another character that shows up a lot in fanfiction. Writers like to explore his motives more deeply, or come up with scenarios where he has a change of heart or forms an unexpected alliance. His complex character makes him an interesting subject for fanfiction writers to play around with.
Aside from Ladybug and Chat Noir, Hawk Moth is quite popular in fanfiction. He is the main villain, and many fanfiction writers like to explore his backstory and motives further. There are also some side characters like Alya, Marinette's best friend, who is popular as she often gets involved in the superhero adventures in an indirect way. And of course, Adrien, who is Chat Noir, is a fan favorite due to his charming personality both as a superhero and as a civilian.
Marinette is also very popular. Fanfiction often delves into her life as a normal girl, her struggles with school, her crushes, and how she balances being Marinette with being Ladybug. Her clumsy but endearing personality gives a lot of room for interesting storylines.
One of the most common characters to be swapped with Black Widow is Hawkeye. Their long - standing relationship in the Marvel universe makes it an interesting choice. It allows for exploration of how they view each other's skills and lives. Another common character is the Hulk. A body swap between Black Widow and the Hulk would be full of chaos. Black Widow would have to deal with the Hulk's uncontrollable strength, and the Hulk (in her body) might struggle with her more refined and strategic way of thinking.