A more character - driven story could explore the relationship between Ben and Myaax. Maybe they start off not getting along because of their different personalities and ways of doing things. Ben is used to being the lone hero, while Myaax is more of a team player. But as they face various challenges together, they gradually learn to respect and rely on each other. This could involve them having heart - to - heart conversations during battles or while exploring new places.
Another interesting plot could be that Myaax comes from a parallel dimension where she has different powers. In the fanfiction, she accidentally crosses over into Ben's dimension. Ben, being the hero he is, tries to help her get back home while also learning about her unique powers and how they could be useful against some of his usual foes. For example, her powers might be related to energy manipulation, which could be used to enhance the Omnitrix's functions.
The main characters are obviously Ben 10 and Myaax. Ben 10, with his Omnitrix, has the ability to transform into various alien forms, each with its own unique powers. He's a brave and sometimes impulsive hero. Myaax, on the other hand, has her own set of skills and characteristics that are yet to be fully explored in the fanfiction. Depending on the story, there could also be other supporting characters like Gwen or Kevin from the Ben 10 universe who might play a role in the adventures of Ben and Myaax.
For 'ben 10 x overs fanfiction', a great concept would be a crossover with the DC Universe. Picture Ben 10 meeting Superman. Ben could be in awe of Superman's powers, and they could team up to stop Lex Luthor who has somehow gotten his hands on some of Ben's Omnitrix technology. Or a crossover with the Justice League where Ben's unique abilities add an interesting dynamic to the team. He could transform into different aliens to complement the skills of each League member.
One idea could be that Ben discovers a new and powerful alien form in the Omnitrix that has abilities he's never seen before. He has to quickly learn to control it to defeat a new and dangerous villain.
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 idea could be that the Nemetrix starts malfunctioning and gives the alien predators it controls some of Ben's Omnitrix powers. This would create a whole new set of challenges for Ben as he has to deal with enemies that are a strange mix of the two technologies.
Well, a plot could be that Vilgax gets amnesia and Ben has to decide whether to take advantage of this or help him. This could lead to a whole new dynamic between them as Ben tries to figure out what to do. Also, a fanfiction could explore what would happen if Vilgax became a mentor to Ben in a strange, alternate universe. They could train together and Vilgax could pass on some of his knowledge, but also try to manipulate Ben for his own ends. Or, perhaps a story where Vilgax and Ben are both stranded on a strange planet and have to work together to survive, all while dealing with their mutual distrust.
Perhaps a fanfiction where they go on a time - traveling adventure together. They could visit different points in time and encounter versions of themselves and their friends from various timelines, which would lead to some really interesting character development.
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 idea could be that Mal and Ben face challenges in their relationship due to the unexpected pregnancy. Their kingdoms might have different reactions, with some being supportive and others worried about the future of the united kingdoms. They have to work together to prove that they can handle this new chapter while also dealing with any internal doubts.
One idea could be a story where Ben and Kevin have to team up against a new, powerful alien threat that neither of them can face alone. They have to combine their powers and skills in unique ways.