The human character often develops unique physical skills. For example, if raised by a predator like a leopard, they might be extremely agile. Mentally, they could have a more primal way of thinking, being more attuned to survival instincts.
One interesting story could be about a human child raised by wolves. The child might learn to hunt like a wolf, run on all fours, and communicate with wolf howls. Another could be a human raised by big cats, and they develop a very different sense of danger and stealth compared to normal humans.
The story could start with the human being an orphan or lost in the hobbit - inhabited area. As they grow up, they might face challenges in adapting to hobbit ways. For example, they could struggle with the small - sized living spaces of hobbits. But over time, they learn to love and appreciate the hobbit lifestyle.
The character development often starts with the human's initial confusion and fear. As they grow up among anthros, they gradually learn to adapt and understand the anthro ways. Their values may change over time. For example, if the anthros have a more communal lifestyle, the human might become less individualistic.
As the story progresses, he could develop a stronger sense of responsibility. With his superhuman abilities, he realizes that he has a greater role to play in protecting his village or the world. He might face moral dilemmas on how to use his powers for good.
To develop the Human Friday character, start with their backstory. Maybe they grew up in a tough neighborhood and had to learn to be resourceful. This would explain their ability to handle various tasks for the Avengers. For example, if they had to fend for themselves as a kid, they'd be good at finding food and supplies, which translates to helping the Avengers in a similar way.
The character can start as a naive person due to being sheltered by Pokémon. As they interact more with the outside world, they become more aware and grow. For example, they might learn about the concept of money which Pokémon don't use.
The human's character could develop from being afraid of the underwater world at first to becoming a confident explorer. This change can be shown through their actions, like how they start to swim further and deeper on their own.
The theme of growth in this type of fanfiction is explored in multiple ways. Firstly, the human grows in terms of physical abilities. They might become stronger or more agile like the animals that raised them. Secondly, there is emotional growth. The human has to deal with the loss of their 'normal' human upbringing and form new emotional attachments with the anthropomorphic animals. They also grow intellectually as they learn the ways of the animal - like society, such as their laws, traditions, and survival techniques. This all - around growth makes the character more complex and interesting.
Cultural challenges would be a big deal. The Yautja have a strict honor code and a very different social structure. The human would have to learn their ways of hunting, which might involve killing other creatures in a way that is not acceptable in human morality. Also, the Yautja might not have the same concepts of family and friendship as humans do, so the human would have to adapt to a rather cold and practical social environment.
In some fanfictions, if Inuyasha is made more human - like, say he loses his demon powers temporarily, Kikyo might see him in a new light. She could start to trust him more easily as he doesn't have the unpredictable demon side. This new - found trust could be the start of a deeper emotional connection.