Some good ones include 'Rook's Protective Side'. In this fanfiction, the reader is in danger and Rook shows his very protective side towards the reader. It's a great read if you like to see the relationship develop from a more protective angle. Additionally, 'A Day with Rook' is a lighter fanfiction that just shows a normal day in the life of Rook and the reader, with some cute interactions and dialogues.
Perhaps a story where an old enemy of Ben's targets Rook to get to Ben. Ben feels guilty and protective. They go on the run, hiding in different places across the galaxy. Along the way, they meet some interesting characters who help them. In the end, they face the enemy together, with Ben using his Omnitrix and Rook using his upgraded Proto - Tool to defeat the bad guy.
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.
First, think about the character of Rook. What are his traits? His loyalty, his sense of duty. Then, create a scenario for the reader to enter his world. Maybe it's through a time - space anomaly. Keep the interactions between Rook and the reader natural. For example, Rook might be initially cautious around the reader as he is with new things.
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.
Another way is by showing their daily interactions. Like when they're just hanging out between missions, sharing stories about their different worlds. Ben could tell Rook about his adventures on Earth, and Rook could share stories about his Plumber training. This would make them understand each other better and grow closer. They could also have inside jokes that develop over time from these interactions. Also, having them train together to improve their combat skills would not only make them better fighters but also strengthen their relationship as they rely on each other during the training sessions.
One popular rook x reader fanfiction might be the one where the reader and Rook go on an adventure in a magical forest. It has great descriptions of the scenery and their interactions.
One idea could be the reader having a unique alien ability that Ben discovers during an adventure. They then team up to fight a new villain that is immune to Ben's usual alien forms.
One great Ben 10 and Rook fanfiction is 'The Galactic Adventures'. It takes Ben and Rook on a journey across different galaxies to save the universe from a new and powerful threat. Another interesting one is 'Rook's Secret Mission'. In this story, Rook has to go on a solo mission while Ben is dealing with a local villain on Earth. It shows Rook's skills and his determination. And 'Ben and Rook: Partners Forever' is also a good read. It focuses on their friendship and how they grow as a team, facing various challenges together.
One possible 'ben x rook lemon fanfic' could be about their adventures together in a post - apocalyptic world where they have to rely on each other. Their relationship deepens as they face challenges, and the lemon aspect could be a passionate moment they share during a quiet interlude in their journey.
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.