Who could be the main antagonists in 'marinette sunshine of gotham fanfiction'?

One idea could be Marinette moving to Gotham and using her unique skills to help the city in a different way than the local heroes. For example, she could use her fashion design skills to create protective gear for the people in dangerous areas. Another plot could involve her befriending some of the Gotham characters like Barbara Gordon and sharing her positive outlook, which gradually changes the gloomy atmosphere of Gotham. She might also get involved in some of the city's mysteries and use her cleverness to solve them.

Another possible main antagonist could be Two - Face. His sense of justice, albeit a twisted one, would likely be at odds with Harry's more magical and morally - grey - area - free way of doing things. He might see Harry's use of magic as an unfair advantage and try to bring him down, especially if Harry's actions start to influence the criminal underworld that Two - Face is a part of.

Scarecrow could also be a main antagonist. His fear - inducing toxins could be a real problem for Harry. Harry would have to use his magic to counter the effects of the fear toxin and also figure out a way to stop Scarecrow from spreading it all over Gotham.

Well, the plot could start with Marinette being excited for the trip but also a bit worried due to Gotham's dangerous reputation. Once in Gotham, her class visits various places like Arkham Asylum for an educational tour. However, things go wrong when some of the inmates escape. Marinette uses her skills, both in combat (from her Ladybug training) and in persuasion, to keep her classmates safe and help the Gotham police recapture the inmates. Meanwhile, she might start a friendship with a Gothamite who shows her the real heart of the city beneath all the chaos.

Hawkmoth is usually the main antagonist. Since he is the one who akumatizes Marinette in the first place. He takes advantage of her negative emotions, like her insecurities or anger, to turn her into an akuma and use her for his own evil plans.

I'm not entirely sure specifically as it depends on the individual fanfiction. But generally, it might be a story where the Gotham setting (maybe from Batman universe) has some sort of connection or affection for Marinette, perhaps in a crossover scenario where characters from different shows or universes interact in unique ways.

Hawkmoth could be the main antagonist. In the original story, he's always causing trouble. In a 'marinette dies' fanfic, he could finally succeed in his evil plan, maybe by getting his hands on the Ladybug and Cat Miraculouses and using their combined power against Marinette.

Here's a short fanfiction start: Marinette was excited yet nervous about the class trip to Gotham. As her class boarded the plane, she clutched her sketchbook tightly. In Gotham, they visited Wayne Tower first. Marinette couldn't help but notice the dark and brooding atmosphere of the city, so different from Paris. She started getting ideas for new fashion designs inspired by Gotham's unique aesthetic.

Well, first off, AO3 is a great place to start. It has a large and diverse collection of fanfictions. Just type in 'gotham loves marinette' in the search bar and see what comes up. Fanfiction.net is also a possibility. However, sometimes the search there can be a bit tricky, so you might need to play around with different keyword combinations. Another option could be Wattpad, although it might not have as many of this specific type of fanfiction as the other two, but it's still worth a look.

The Riddler could be a great main antagonist. He could create puzzles and traps that are based on both the Flash's speed and Gotham's dark secrets. For example, he might set up a trap where the Flash has to run through a maze of moving walls in Gotham while also solving riddles that are related to Batman's past.