An OC teleported to the Owl House fanfiction would adapt in various ways. First, they'd have to figure out the language. If they don't understand what the characters are saying, communication would be a big issue. They could try to learn from Luz, who also had to adapt when she first arrived. They might also need to find a way to earn their keep, perhaps by helping Eda with her potions or odd jobs around the Owl House.
The OC could experience a whole new range of emotions. They'd be in awe of the beautiful and dangerous landscapes of the Boiling Isles. They might form a strong bond with King, who is always looking for new friends. Or they could be hunted by the Emperor's Coven if they were seen as a threat. Their teleportation could also be a key to solving some of the mysteries in the Owl House world, like the origin of the Titan's magic.
He would first have to get used to the presence of vampires and werewolves. This means understanding their rules, like the vampires' need to drink blood and the werewolves' transformation during the full moon. He might also have to adapt to the small - town atmosphere of Forks, which is very different from modern - day big cities.
Ruby would need to adapt to the food in the real world. In Remnant, they might have different kinds of food based on their regions and cultures. Here, she'd be introduced to a whole variety of new tastes. She might find some things delicious, like pizza perhaps, but also be really confused by things like fast food chains. Also, she'd have to get used to the currency system. Without any money at first, she'd have to figure out how to earn or get some in order to survive.
To adapt to being the Mandarin, Naruto would first need to understand the nature of the ten rings. He might start by experimenting with each ring's individual power. He'd then figure out how to combine these powers with his existing ninja abilities like rasengan. His relationships with other characters would also change. Some might be afraid of his new power, while others would see it as an opportunity to fight against greater threats. Naruto would have to convince them that he can be trusted with this power and that he'll use it for the greater good.
The OC would first need to adapt to the Senju's strong sense of family and clan loyalty. They would have to learn the clan's traditions, like their unique way of training. Maybe they would start by observing the other Senju members and then gradually participate. They would also have to get used to the Senju's natural - based ninjutsu, which might be very different from what they knew in their past life.
One idea could be creating an OC who is a hybrid of two different magical creatures in the Owl House universe. This could lead to unique storylines about acceptance and self - discovery.
Start with a clear concept. Decide on their species, magical abilities, and appearance. For example, if your OC is a witch, think about what kind of spells they specialize in.
Percy would need to learn how to be stealthy. He's used to fighting out in the open as a demigod, but as a ninja, he'd have to blend into the shadows. He could use his powers over water to create distractions or cover his movements, like making a mist to hide in.
One way is to start fanfiction contests that have specific themes related to the positive aspects of 'The Owl House', such as the exploration of the different magical realms or the development of the characters' personalities. By highlighting these areas, fans are more likely to create positive fanfiction rather than sexual ones. Also, fan communities can promote and share only the positive fanfictions they find, creating a positive cycle.
A Naruto character would first have to understand the concept of the Force. For example, Naruto himself might initially struggle as he's used to chakra. But his determination could help him adapt. He might use his skills in combat, like his shadow clones, in a new way within the Sith Warrior framework.