Another plot could involve Ben accidentally creating a situation where the female DC characters are in danger, and he feels responsible for protecting them. As he does so, they become attracted to his sense of duty and his unique abilities. For instance, he might cross paths with Batgirl and Supergirl, and they all have to deal with a powerful villain from another dimension.
One idea could be that Ben, with his Omnitrix, somehow gets transported to the DC universe and meets various female characters. Maybe he has to team up with them to stop a common threat, and during the adventure, relationships start to form. For example, he could work with Wonder Woman, and she is initially skeptical of his powers but grows to respect him.
One idea could be Ben Tennyson getting transported to the DC universe and his Omnitrix's powers attracting the attention of various female characters. For example, Wonder Woman might be intrigued by his unique abilities and his sense of justice. Another could be that he teams up with some of the female superheroes to fight a common enemy, and during the process, a harem - like relationship starts to form.
A really interesting plot could involve a time - traveling aspect. Ben and Julie accidentally travel back in time to when Ben first got the Omnitrix. They have to be careful not to disrupt the timeline while also trying to find a way back to their own time. Along the way, they could meet younger versions of characters they know and have some really fun and emotional interactions. This could also lead to Ben learning some important lessons about his powers from his past self.
One plot idea could be Spiderman getting transported to the DC universe and forming a harem of female superheroes who are initially skeptical of him but gradually come to respect and love him as they fight together against common threats. For example, he could team up with Wonder Woman, Batgirl, and Supergirl.
One plot idea could be that Naruto, through some sort of interdimensional rift, ends up in the DC universe. His unique abilities and personality attract a group of DC female characters, like Wonder Woman, Batgirl, etc. They form a sort of harem - like group around him as they are intrigued by his ninja skills and his never - give - up attitude. They then team up to face a common threat that is endangering both the DC world and Naruto's own world that is somehow connected through the rift.
One idea could be Ben getting stranded on an alien planet full of strange and dangerous creatures. He has to use his alien forms in creative ways to survive and find a way back home.
Maybe a story where Ben teams up with some of his alien enemies against a greater threat in space. They could be in a situation where they have to fight a powerful cosmic entity that wants to destroy all known planets. Ben would have to convince his former foes that they need to work together by showing them the magnitude of the danger.
One idea could be Ben using his alien forms in a virtual reality gaming world. He could face off against digital versions of his enemies and have to use his unique alien abilities to progress through levels.
One idea could be exploring the origin of the Nemetrix in more depth. Maybe there was an ancient alien race that created it for a specific purpose, like hunting down the most dangerous predators in the galaxy. Another plot could involve a character getting accidentally bonded with the Nemetrix and having to deal with its unpredictable powers.
One idea could be Looma challenging Ben to a series of alien - based contests in her home planet. This would show off different Ben 10 aliens' abilities in a new and exciting setting.
A more character - driven plot could be about Ben trying to help an alien species that is being persecuted in the Omniverse. He uses his different alien forms to understand their culture and problems better. Along the way, he discovers that there are some dark secrets in the Omniverse's politics that are related to this species' situation. This would allow for a deeper exploration of the Omniverse's world - building and Ben's character growth.