Hawk Moth can also be a main character in such fanfictions. His reaction to the reveal of Ladybug and Chat Noir's identities is important. He might try to take advantage of the situation, or be forced to change his plans completely. And his presence adds an element of danger and conflict to the story.
The main characters are Ladybug and Chat Noir. But don't forget about Hawk Moth, the villain. In some fanfictions about the big reveal, Hawk Moth might find out their identities during or after the reveal, which changes the whole dynamic of the story. He could use this knowledge to try and defeat them in a more devious way, so his presence is still very much a part of the plot even though the focus is on the reveal between Ladybug and Chat Noir.
Most likely Ladybug and Chat Noir would be the main characters as they are central to the Miraculous Ladybug series. They would probably be the ones whose identities are at risk of being revealed during the dodgeball game.
One possible plotline could be that Ladybug and Chat Noir's identities are revealed during a major battle against a powerful akuma. This causes chaos at first as the citizens of Paris are shocked, but then they quickly come together to support the heroes in a new way.
Iron Man is often a main focus. His genius and charisma make him a popular choice for fanfiction writers. They can explore his relationships with other Avengers, like his banter with Captain America.
Often, Iron Man is a main focus. His genius and sarcastic nature make him a great character to write about. Writers can explore his inner thoughts and his relationship with the other Avengers more deeply. Captain America is also commonly focused on. His old - fashioned values in a modern world can create interesting storylines.
Panty and Stocking are the main ones. Writers like to take these two characters and put them in different scenarios. They might change their personalities a bit, but still keep their core identities. Fans are interested in seeing how they react in new situations, whether it's a different kind of battle or a strange encounter with a new character.
Naruto is usually a main focus. Since the concept is related to perfection, his journey to become the best Hokage and the strongest ninja is often explored in greater detail. He might be shown overcoming his flaws more quickly or mastering new techniques faster. Sasuke is also likely to be a central character. His path of revenge and his own pursuit of power can be re - imagined with the idea of perfection, like achieving the ultimate Sharingan or new levels of his combat skills.
Often, Bella is still a central character. Even in fanfictions about moving on, her journey is important as she might be dealing with the aftermath of her relationship with Edward or Jacob. Her growth and how she adapts to new situations are key.
Obviously, Kushina and Naruto are the main focuses. Kushina because she's the one who is alive in this fanfiction concept, and Naruto because he now has his mother in his life. Their relationship is often explored deeply, showing how Kushina can guide Naruto in his ninja journey and in life in general.
Well, obviously Snape is a main focus. His motives, his actions, and his complex personality are usually explored in depth. Then there are the Potters - James, Lily, and Harry (even as a baby). Their relationship with Snape, especially Lily's influence on Snape, is often a central part of the story.