If it's a crossover with humans, the humans can start off being afraid of the dinosaurs but then learn to understand and respect them. The development can be about the characters learning from each other. The dinosaurs could teach the humans about survival and the humans could introduce the dinosaurs to new concepts like art or music. This way, both types of characters grow in the story.
In a crossover with other fictional species, like aliens, the characters can develop based on their initial misunderstandings and then mutual discovery. The extreme dinosaurs might initially see the aliens as a threat and vice versa. But as they interact more, they find common ground. Maybe they both have a strong sense of loyalty to their own kind, and this similarity can be the starting point for their character development and a deeper relationship in the fanfiction.
Perhaps a crossover with a fantasy world. The extreme dinosaurs could be transported to a land of magic and elves. The contrast between their prehistoric nature and the magical elements of the new world would create a lot of interesting storylines. For example, they might have to learn to use magic or fight against magical creatures.
In some fanfictions, there may be new characters introduced, perhaps a young dinosaur who looks up to the Extreme Dinosaurs and joins them on their adventures. But the core group of the Extreme Dinosaurs always plays a major role.
For the Rangers, their interactions with new characters can show different sides of them. If they cross over with a more light - hearted group, like the Smurfs, the Rangers might show a more patient and protective side. They'd have to keep the Smurfs safe while also dealing with the main threat.
For Sherlock, his character can be developed by showing his reaction to Merlin's magic. At first, he might be skeptical and try to find a scientific explanation. But as he witnesses more of Merlin's powers, he has to re - evaluate his world view. This could lead to a more open - minded Sherlock. For Merlin, being in a modern world with Sherlock could make him more aware of the need for secrecy regarding his magic. He might also learn to use his magic in more creative ways to solve modern - day problems.
To develop Naruto in a crossover with Obito, you can put him in situations where he has to use his wits against Obito's Sharingan - related abilities. This would force him to become more strategic. Also, Naruto could learn about the Uchiha clan's history from Obito, which would expand his knowledge. As for Obito, Naruto's presence could make him confront the fact that his actions have consequences. He could start to see the value in the bonds that Naruto has with his friends and village, and this could lead to a change in his goals and values.
The characters can also develop through shared experiences. For instance, if they go on a quest together, they will face challenges that force them to rely on each other. Ponies might teach Lucario about the joys of celebration and relaxation, while Lucario could teach the ponies how to be more vigilant and face danger bravely. This mutual growth would make for an engaging crossover fanfiction.
In a Kamen Rider crossover, you can develop their personalities through their interactions with other Riders. If a more serious and stoic Rider meets a very energetic and talkative one, there will be a clash at first. But as they go through challenges together, they start to understand and even adopt some of each other's traits. For example, the serious Rider might become a bit more relaxed and the energetic one might learn to be more focused. Also, new relationships can be formed, like friendships or rivalries, which can shape their personalities in different ways.
Both sets of characters could develop through friendship. A Thomas character like Percy could make friends with a shy pony. Percy's friendly nature could help the pony come out of its shell. At the same time, the pony could teach Percy about the joys of magic and nature. This mutual exchange of ideas and experiences would lead to the growth and development of both characters in the crossover fanfiction.
For Artemis, you could show her softer side. In the original stories, she's very stoic. But in the crossover, maybe Percy's more human and relatable nature starts to chip away at her cold exterior. For Percy, he could grow in his understanding of the more wild and untamed aspects of the divine world through his interactions with Artemis.
In the fanfiction, Scorpion could start to question his motives of revenge. Sub - Zero's presence and different perspective could make him think about whether his never - ending quest for vengeance is really worth it. Sub - Zero, on the other hand, might learn about the pain that Scorpion has endured which made him so vengeful, and this could change his view of Scorpion from just an enemy to someone with a legitimate cause. This mutual understanding can lead to a great character development arc for both of them.