What are some popular Ben Ten adult fanfiction stories?

Writing fanfiction with adult themes is not appropriate and goes against many ethical and content guidelines. So, I can't provide relevant themes.

Since we should avoid adult - themed content, a better approach to 'Ben Ten' fanfics would be to explore those that are based on the official storylines and expand on them in a positive way. For example, fanfics that delve deeper into the relationships between the different alien species in the 'Ben Ten' world, or ones that create new challenges for Ben to overcome using his Omnitrix.

One popular theme could be alternate universes where the characters have different powers or relationships. For example, an AU where Ben has to deal with his powers in a more adult - like world full of political intrigue related to the Omnitrix. Another theme might be character growth and development into adulthood, like how Gwen would handle her magical powers as an adult in a more complex society. And also, there could be themes of love and relationships, perhaps exploring Ben's romantic relationships in a more mature way compared to the original series.

One popular theme could be alternate universes where the characters have different powers or relationships. For example, an AU where Ben's alien forms have unique social structures among themselves. Another theme might be character growth and development into adulthood, dealing with more complex emotions and responsibilities compared to the original series. Also, crossovers with other science - fiction universes can be a theme, like Ben 10 meeting characters from Star Trek.

One popular Ben 10 Ben Harem fanfiction could be those that focus on Ben's adventures with his harem while facing new alien threats. For example, a story might have Ben and his harem working together to stop an evil alien warlord from taking over the Earth. They use their combined powers and skills to outwit the enemy.

One popular 'Ben 10 Ben and Gwen fanfiction' could be those that focus on their adventures in different dimensions. For example, there might be a story where they end up in a dimension full of magical creatures and have to use their combined skills to get back home. Another could be about a time when Ben loses his Omnitrix and Gwen has to use her magic to protect them both until he gets it back.

Some 'Ben Ten Fanfic' stories involve crossovers. For instance, a crossover with another popular superhero universe. This could lead to really interesting scenarios where Ben has to team up with different heroes or deal with villains from both universes. There are also fanfics that go back in time to explore Ben's ancestors and how they might have had their own Omnitrix - like devices. Additionally, fan - created stories often look at what would happen if Ben lost his Omnitrix and had to rely on his own natural abilities and wits to fight crime.

There are fanfictions where Mal and Ben face a new villain together. This could involve them using their combined skills, Mal's magic and Ben's leadership. Some fanfictions also explore their life in Auradon from the perspective of other characters in the story, which gives a different take on their relationship.

One popular Ben 10 harem fanfiction might be those that focus on unique character interactions. For example, stories where Ben has to deal with the different personalities in his harem while on an adventure. It could involve his alien forms playing different roles in these relationships.

One popular 'Ben 10 Female Fanfiction' story could be those that focus on female characters taking on new and unique roles within the Ben 10 universe. For example, a story where a female character becomes a powerful alien hybrid in her own right, similar to Ben but with her own set of challenges and adventures.