One possible plot could be that Rook and Ben go on an adventure to a new planet in the Ben 10 Omniverse. They encounter a strange alien species that has a unique power. Ben tries to use his Omnitrix to transform into an appropriate alien to deal with the situation, but there are some glitches. Rook, with his Plumber skills, helps Ben figure out what's wrong and together they overcome the challenges and make new friends among the aliens.
One great Ben x Kevin fanfiction could be about their adventures in a parallel dimension. In this story, they might face new aliens and challenges that test their friendship even more. Maybe they find a powerful alien artifact that only works when they combine their unique abilities, leading to a deeper understanding of each other.
Adventure is likely to be a theme as well. The Ben 10 Omniverse is full of exciting places and situations. Fanfics may center around Attwa and Ben Lemon going on adventures, using their unique abilities or powers to overcome obstacles.
Well, in a 'Ben 10 Omniverse Ben x Kai' fanfic, perhaps it could start with Kai joining Ben on one of his inter - dimensional adventures. Along the way, they encounter various challenges that test their relationship. Ben might use his Omnitrix in creative ways to protect Kai, and in the process, they realize their mutual attraction. For example, when they are trapped in a strange alien world, Ben has to transform into different aliens to find a way out while also keeping Kai safe from the local dangers.
The main characters are Ben and Kai. Ben is a heroic figure with the Omnitrix, which is a device full of alien DNA that he can use to transform. He is brave and always ready to protect the Omniverse. Kai, on the other hand, is a feisty and determined character. She brings her own charm and abilities to the story. In a 'Ben 10 Omniverse Ben x Kai' fanfic, these two are the focus. Their different personalities clash and complement each other as they navigate the dangerous and exciting world of the Omniverse together.
An interesting aspect could be exploring Rook's past more deeply. Maybe he has some secrets from his time before being a Plumber that are related to the Ben 10 Omniverse. Ben could help him uncover these secrets while they are on a mission. For example, they could be investigating an ancient alien artifact, and as they dig deeper, Rook's past starts to unfold.
The relationship between Ben and Kevin has room for growth. In fanfiction, they can develop feelings for each other that are more than just friendship. This adds a new layer of depth to their interactions. Writers can show how they deal with these new emotions while still being heroes and facing the threats in the Omniverse. There are also the power dynamics between them. Ben has the Omnitrix, but Kevin has his own unique powers, and how they combine or clash in different situations can make for exciting reading.
In Ben 10 Omniverse, there could be a love story between Ben and Kai. They often go on adventures together. Kai is a strong and brave girl. Ben, with his Omnitrix, saves the day while Kai is always by his side. Their relationship grows as they face various challenges and enemies. The bond between them is special as they understand each other's strengths and weaknesses, and they share a mutual respect which could easily turn into a deep love.
Ben and Kai are likely candidates. Ben is the hero with the Omnitrix, and Kai is his adventurous and tough - minded friend. Their dynamic of going through dangerous situations together could easily lead to a romantic relationship.
One interesting storyline could be a female version of Ben having to deal with different alien cultures in the Omniverse in a more diplomatic way than Ben usually does. For example, she might use her charm and intelligence to resolve conflicts between warring alien species on a planet instead of just using brute force with the Omnitrix transformations.