Well, there might be a story where an alien forms an unexpected friendship with a human in the Ben 10 universe. They could go on a journey together, facing various challenges and learning from each other. For example, the alien might teach the human about its advanced technology, and the human could show the alien the beauty of human emotions.
One interesting story could be about an alien's unique adventure on Earth. Maybe it discovers a hidden power within itself while trying to adapt to human society.
Some of the alien characters themselves, like Heatblast or Four Arms, are also popular. Their unique physical characteristics and powers make them interesting to write about. For instance, Heatblast's ability to control fire can lead to all kinds of scenarios, from battling fire - based villains to using his heat to solve environmental problems in a story.
I'm not sure specifically as 'lemon' often implies inappropriate or adult - themed content which I don't promote. However, if we consider general Ben 10 fanfiction, there are many that explore different adventures of Ben and his alien forms in various new universes or against new enemies.
One interesting aspect could be the unique character interactions. For example, when characters from different universes within the Ben 10 world collide in these crossovers. They might have to team up to face a common enemy that is a combination of threats from both their original storylines. This can lead to some really cool fight scenes and strategic planning among the characters.
Well, one common type of story might be about new alien forms that Ben discovers in the Omniverse. In lemon fanfiction, there could be a focus on the unique powers of these aliens in unexpected situations. For example, an alien with the ability to manipulate time might accidentally send Ben to a different era within the Omniverse, and he has to figure out how to get back while dealing with the local threats.
One idea could be that an alien vampire infiltrates Ben's team. It pretends to be a friendly alien at first but then starts to slowly drain the energy of the other aliens. Ben has to figure out a way to expose it without endangering his friends.
In Ben 10 Alien Force OC fanfiction, there are several engaging concepts. One is the concept of OCs having a hidden agenda. For instance, an OC might seem friendly at first but is actually working for an evil organization. This creates a sense of mystery and suspense. Another concept is the cultural differences between the OCs and the regular Ben 10 aliens. If an OC is from a highly advanced and peaceful society, their values and reactions to the chaos in the Ben 10 world can be very different, which can be explored in interesting ways in the fanfiction.
One idea could be exploring the backstories of the aliens more in - depth. For example, how did Four Arms become so strong? Another could be a story where Ben has to team up with his enemies to fight a greater threat. Maybe Vilgax and Ben have to work together against an even more powerful alien race.
One interesting story could be about Ben and Gwen's adventure in a magical realm where their relationship is tested in unique ways. Maybe they have to work together to defeat a powerful dark force, and along the way, their bond deepens.
Well, you could write about the origin stories of some of the aliens in more detail. Maybe there are secrets about how Four Arms became so strong that haven't been fully explored. Also, a fanfic could focus on the relationships between the aliens. For instance, do they have a hierarchy or a social structure among themselves? And then there's the idea of an alien form going rogue and Ben having to deal with it in a unique way, not just by using another alien form to fight it.
One idea could be that Ben has to adapt to the daily life of the alien he's stuck as. For example, if he's stuck as a Four Arms, he has to deal with constantly breaking things because of his size and strength. Another could be that he has to find a way to communicate with his friends and family in his alien form, which might be difficult if the alien has a different language or way of expressing itself.