It could be that Marinette had a hidden talent for fighting that was unlocked in the fanfiction. Or perhaps she had to face a dangerous situation that forced her to learn quickly.
Maybe she got some special training or learned from a master.
In some fanfictions, Marinette initially goes into a state of shock and disbelief. She might isolate herself from others, feeling that she can't trust anyone anymore. For example, if her friends betray her, she might stop going to school or participating in group activities.
Marinette's character can be developed through her angry outbursts. For instance, when she gets angry, we might see her make rash decisions that she later regrets. This shows her impulsiveness when overcome by anger. Also, her anger could lead to her learning new ways to control her emotions, which is a part of her growth. Maybe she starts to practice meditation or some other calming techniques, which changes her character over time.
Marinette could start by gathering evidence of her own whereabouts at the time of the supposed crime. If she was at the bakery or with a friend, getting statements from those people would be a good first step.
First, understand the characters well. Marinette is a complex character with her own insecurities and strengths. When creating an OC, make sure their personality and backstory fit into the Miraculous Ladybug universe. For example, if the OC has a power, it should be related to the existing lore in some way. Also, focus on their relationship development. Start with small interactions that gradually build into something deeper, like friendship or more.
Marinette's flexibility can be shown through her physical actions. For instance, when she's in her Ladybug form, she can do high - jumps and acrobatic flips with ease, using her flexibility to dodge attacks. It can also be shown in her civilian life. When she's working on her fashion designs, she might be able to contort herself to get a better view of a piece she's working on or reach for a tool in a tight space.
If Marinette was kidnapped, Tikki could be a key factor. She might try to communicate with other Kwamis to get help. Since the Kwamis have some special powers and knowledge, they could work together to find Marinette. For instance, Plagg could use his Cataclysm in a unique way to break through any barriers that are keeping Marinette captive.
One possible scenario could be that Marinette gets injured during a fight as Ladybug and is rushed to the hospital. In the fanfiction, her friends might come to visit her, and there could be some sweet moments between her and Adrien as he's worried about her. Maybe she has to keep her identity a secret even while in the hospital, which adds an extra layer of tension.
There's also 'The Luka - Marinette Connection'. In this fanfiction, the connection between Luka and Marinette is explored on a deeper level. It starts with Luka noticing Marinette's little quirks and how she tries to hide her feelings. As the story progresses, they start to open up to each other more. The author creates a really engaging story by adding in some mystery elements related to the Miraculous and how it might affect their relationship.
One great fanfiction could be about Marinette getting the Peacock Miraculous in a unique situation. For example, in a world where all the Miraculouses are scrambled among the characters, Marinette discovers the Peacock Miraculous while on a solo adventure. She has to figure out how to use its powers, which are different from the Ladybug Miraculous she's used to. This could lead to some really interesting character development as she tries to master a new set of abilities.
One possible fanfiction could be about Marinette transforming into a mouse - themed Miraculous holder. Maybe she discovers a new mouse - themed Miraculous in a hidden part of Paris. This could lead to her having new powers like super - speed and the ability to fit into small spaces. She could use these powers to outwit Hawk Moth's akumas in a really unique way, and her relationship with Adrien might also take an interesting turn as she tries to keep her new identity a secret from him.