You can start by basing them on different aspects of the coral island itself. For example, a character could be inspired by the colorful coral, being very flamboyant and full of life. Or a character could be like the tides, sometimes calm and other times wild and unpredictable.
Think about the different occupations and lifestyles on the island. A character could be a coral reef conservationist, passionate and dedicated. Another could be a laid - back beach bar owner who has a lot of interesting stories to tell. You can also give them unique quirks like a character who always sings old sea shanties while working.
Think about the different cultures in Alola. You could create a character who is a descendant of an ancient Alola tribe and has special knowledge about Pokemon passed down through generations. This would make them unique and add an interesting element to the story.
To create unique characters, start with their backstory. For example, a character could have grown up in a hidden part of the 'game of fate' world, away from the main action, which gives them a different perspective. Give them a distinct personality trait, like being overly superstitious in a world full of calculated risks. Their appearance can also be unique, perhaps having a rare mark on their body that is related to an old legend in the game's lore.
Combine different traits. Maybe a character is both extremely powerful in magic but also has a crippling fear of heights. This kind of contradiction can make a character more complex and unique. They could be the most powerful mage in a battle on the ground but completely useless when they have to fly on a magical broom to reach a high - up tower.
Give them unique appearances. Maybe a trainer has a distinct style of clothing inspired by a certain type of Pokemon. This can also tie into their personality. For instance, a trainer who loves Electric - type Pokemon might have a bright, electrifying color scheme in their clothes. Also, consider their Pokemon teams. A character with a team full of Poison - type Pokemon might be seen as more mysterious or edgy compared to someone with a team of cute Normal - type Pokemon.
There might be a character named Ralph. He is more of a thinker and planner, and helps the group make decisions about things like building shelters and finding food. He is good at coordinating with others.
Look at the existing character traits in the movie and invert them. For example, if most of the characters in Halloween Town love scaring, create a character who is scared of scaring others. This contrast can make for an interesting and unique addition to your fanfic.
You can start by mixing different magical girl archetypes. For instance, combine the shy, bookish type with a more aggressive, warrior - like personality. Another way is to give them unusual powers related to the apocalyptic setting. Maybe one character can control the rubble and debris left from destroyed cities.
You can make a character who is an aspiring Pokemon chef. They use their knowledge of Pokemon food to boost their Pokemon's performance in battles at the Striaton Gym. Another way is to create a character who is a Pokemon artist and uses their creativity to inspire their Pokemon in unique ways during battles. Also, a character with a disability but who has a special bond with their Pokemon can be very interesting.
To create unique characters for an MLP Dark Mirror Universe fanfic, think about the values of the dark mirror world. If it's a world full of envy and hatred, then the characters should reflect that. You could combine different pony types in strange ways. Say, a half - unicorn, half - earth pony character with a split personality due to the chaos of the mirror universe. Also, consider their backstories. Maybe a character was once good in the normal universe but a tragic event in the mirror universe turned them evil. Give them names that sound menacing or different from the normal MLP names too.
Look at the gaps in the existing Harry Potter universe. Maybe there's no character who is really into Muggle technology and trying to combine it with magic. So, create a character who is a pure - blood wizard but fascinated by Muggle inventions like the telephone. Their choices could be all about how to bridge the gap between the two worlds. They might choose to study spells that can interact with electricity or create magical devices inspired by Muggle tech. This would make them stand out in the wizarding world and also give a lot of scope for interesting storylines within your fanfic.