Who could be the main antagonist in 'pokemon sun and moon greninja returns fanfiction'?

Obviously, Greninja is one of the main characters as the title suggests its return. The trainer who was associated with Greninja before would also be a main character. They are likely to be central to the story's development.

One idea could be that Greninja returns with a new power that it gained during its time away. It could use this power to help Ash in a crucial battle in the Alola region. For example, it might have learned to control water in a more unique way, like creating ice sculptures that can attack opponents.

A fanfiction could focus on Ash Greninja's unique form and abilities. For example, it could tell a story where Ash has to rely on Greninja's special skills to overcome a powerful, mysterious Pokemon in the Alola region. This would show the significance of their partnership in the context of Pokemon Sun and Moon.

One interesting plot point could be Greninja's reunion with its trainer. Maybe after a long separation, there are new challenges they face together in the Alola region. Another could be Greninja's unique abilities being put to the test against new and powerful Pokemon in Sun and Moon.

A good Greninja fanfiction in the Pokemon Sun and Moon universe often has well - developed characters. Greninja itself should have a distinct personality, not just be a copy of what we see in the games. The author should give it more depth, like its thoughts, feelings, and relationships with other characters.

In some fanfictions, Ash Greninja's moment of saving Ash from a dangerous fall during a battle in the Alola region is really cool. It shows their loyalty and quick reflexes.

You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own. They usually have a wide selection of Greninja - related fanfictions from Pokemon Sun and Moon. Just use the search bar and type in 'Greninja Pokemon Sun and Moon' and you'll get a bunch of results.

A powerful and envious Pokémon trainer could be the main antagonist. This trainer might be jealous of Ash's bond with Greninja and decides to break it. He could use dark magic or some sort of mind - controlling device to make Greninja turn against Ash.

Well, in this fanfiction, Lillie's return often brings new adventures. Maybe she comes back with new Pokemon skills or knowledge. It could also lead to reunions with old friends in the Pokemon Sun and Moon universe.

I think Moon could be a great main character. She's independent and strong - willed. In the high school au, she could be the one who challenges the traditional Pokémon training methods at school. Then there's Sun, who could be her rival or partner, depending on how the story goes. There could also be some original characters created specifically for this fanfiction. For example, a new student from a far - off region who has unique Pokémon from places not seen in the original Sun and Moon games, adding a fresh perspective to the high school's Pokémon scene.