A human in the Lion King world could cause quite a stir. First of all, the natural order of the Pride Lands would be disrupted. The animals have their own way of life based on instincts and the Circle of Life. The human might introduce new concepts like building permanent shelters or using tools. This could change how the animals view their world. They might start to question their traditional ways. For example, Simba might be curious about the human's ability to communicate complex ideas and might want to learn from them. However, some animals like Scar might see the human as a threat to his power and try to get rid of them.
The human could interact with the Lion King characters in many ways. They might communicate with Simba through gestures and simple sounds at first. With time, they could develop a deeper understanding. For example, they could teach Simba about things from the human world like friendship values that are different from what he knows in the animal kingdom.
Maybe the human is a scientist who has been studying a strange phenomenon that leads them to the Pridelands. They bring with them knowledge and technology that is both useful and confusing to the animals. For example, they might have a camera which the animals mistake for some kind of magic eye. The human could also use their medical knowledge to help injured animals, which earns them respect in the Pridelands.
One challenge could be communication. Since lions communicate in different ways like roaring, growling and body language, it would be hard for a human to fully understand and be understood at first. For example, a simple warning growl might be misinterpreted by the human.
Communication would be a major challenge. Since Nala is a lion and the human doesn't speak the same language as lions, they would have to find ways to understand each other. This could involve a lot of body language and trial - and - error.
Some great concepts for human Lion King fanfiction could involve a human being adopted by a lion pride. This human grows up with the lions, learning their language and customs. They could then use their human intelligence to come up with new strategies for hunting or defending the pride. For example, they might introduce the concept of traps to catch prey more efficiently. Another idea is a human who is a storyteller in the human world but somehow ends up in the Lion King world. The human then tells the lions stories from their own world, which inspire the lions to be better leaders or to face their fears. Also, a human with magical powers could arrive in the Pride Lands and use their powers to heal the land that has been damaged by Scar's reign.
The human child's character can be developed by showing their initial reaction to the strange new world of the Pride Lands. For example, they might be scared at first but then gradually become curious. Their relationships with the animals, like how they bond with Simba or Timon and Pumbaa, can also shape their character. If they have a special skill or talent, like singing in a way that attracts other animals, that can be part of their development too.
A human can fit in by being a lost traveler. For example, a human could be on an expedition in Africa and accidentally stumble into the Pride Lands. They would then have to learn the rules of this new world quickly. Another way is if the human has a special gift, like being able to communicate with animals. This would allow them to interact with the Lion King characters easily. The human could also be a spirit guide of sorts, sent to help the lions during a difficult time.
One idea could be that a human gets lost in the Pride Lands and Zira, instead of her usual hostile nature towards outsiders, is curiously drawn to the human. Maybe she sees the human as a potential ally in her quest for power, or perhaps she believes the human has some special knowledge that could help her. Another idea is that a human has the ability to communicate with animals like in some fantasy stories, and tries to convince Zira to let go of her hatred and find a more peaceful path for her pride.
One idea could be that a human child gets lost in the Pride Lands and is adopted by a lioness. The child grows up learning the ways of the lions, facing the same challenges as Simba did, like dealing with Scar's evil plans. Another could be that the human child has a special power, like being able to communicate with all animals in the Pride Lands, and uses it to bring peace between the lions and other species. Or perhaps the human child is a descendant of an ancient tribe that has a connection to the Pride Lands and must fulfill a prophecy to save the kingdom.