Steve Rogers is often a central character in fanfictions. In the context of a love potion, his old - fashioned values could be put to the test. He might be extremely conflicted about the feelings the potion induces. Thor is also a good candidate. His god - like status and lack of understanding of some earthly concepts like love potions could make for some comical or profound moments as he deals with the effects.
Tony Stark is likely to be a focus. His flamboyant and playboy - like personality could lead to some really interesting scenarios when affected by a love potion. He might make grand gestures towards someone he wouldn't normally be interested in. Another likely character is Natasha Romanoff. Her complex past and guarded nature could create a great contrast when the love potion breaks down her walls.
Tony Stark is a likely focus. His intelligence and experience with technology, especially time - travel technology in the movies, make him a central figure. He could be the one to figure out the mechanics of time travel and lead the Avengers in their time - traveling adventures.
Ant - Man would be a likely candidate as his power already involves size - changing. In fanfiction, his ability could be enhanced or malfunction, leading to all kinds of interesting scenarios. For example, he could accidentally make all the other Avengers the same size as him, creating a whole new dynamic for the team.
Obviously Merlin himself could be affected. He's the one with the magic and might accidentally expose himself to the potion. Arthur is also a likely candidate. As the king, if he's affected by the love potion, it would have a huge impact on Camelot. Morgana could also be a character affected. If she were under the influence of a love potion, it could change her plans and her relationships with other characters. And Guinevere too, since she has important relationships in Camelot that could be altered by the potion.
Obviously, Ladybug and Chat Noir are the most likely. They already have a complex relationship, and a love potion could really stir things up between them. Marinette, as Ladybug, could be the one accidentally affected by the potion and start acting strangely around Adrien, who is Chat Noir. Another character could be Alya. She's Marinette's best friend, and she could get caught in the middle of the love - potion - induced chaos. Maybe she tries to help Marinette figure out what's wrong or even gets affected herself and falls for Nino in a more extreme way. Hawk Moth is also a candidate. He could use a love potion as part of his evil plan to manipulate Ladybug or Chat Noir.
Sheen is very likely to be affected. He's impulsive and would probably be one of the first to come into contact with the love potion. His over - the - top personality would make his actions under the influence of the potion really exaggerated, like falling in love with the most random things. Carl could also be affected. He's a bit of a follower, so if Sheen gets affected, Carl might follow suit without realizing it. And of course, Cindy. Since she and Jimmy have that sort of love - hate relationship, if she gets affected by the love potion, it could lead to some really interesting and comical situations between them.
Hulk (Bruce Banner) could be the focus. Since his body is already in a state of flux between his human and Hulk forms, any changes in his diet or a scientific experiment gone wrong could potentially cause him to gain weight in his human form, which would add an interesting twist to his character.
Captain America could be a likely character to be betrayed. He represents the old - school values of the Avengers, and in a more modern, cynical world within fanfiction, some might see his ideals as outdated and turn against him. Also, Tony Stark. His wealth and sometimes over - confident attitude could make some of the other Avengers, especially those with more humble backgrounds, feel resentful and potentially betray him. And Thor, being an Asgardian, might be betrayed due to the other Avengers' mistrust of his alien nature or the potential threat Asgard could pose.
Definitely Tony Stark. His complex personality, his wealth, and his role as a sort of father figure in some scenarios make him a great focus. He can be shown as mentoring the younger Avengers or having heart - to - heart talks with them about responsibility.
Definitely Torunn. She has a great backstory being Thor's daughter, and her powers are really interesting. You can explore her journey of living up to her father's name and forging her own path as a hero.
I think Santana would be a key character. She has such a strong personality and her development from a bully to a more empathetic person could continue in the future story. Brittany might also be in the spotlight as she's always been a bit of an enigma and her relationship with Santana could be explored further. Additionally, Mr. Schuester could be important as he could be the guiding figure for the new generation of glee clubbers or dealing with his own post - glee club life.