A time - travel crossover within 'the simpsons crossover fanfiction' is also cool. The Simpsons could travel back in time to the Stone Age or forward to a futuristic world. In the Stone Age, they might have to deal with dinosaurs and primitive living conditions, and in the future, they could encounter advanced technologies that they don't understand.
One interesting concept could be new character backstories. For example, an OC (original character) might be a long - lost relative of the Simpsons family with a unique past that ties into Springfield's history. Another could be different takes on existing storylines. Maybe an OC changes the outcome of a well - known episode by their actions.
One interesting concept could be the unique character interactions. Since it's a harem fanfiction, there might be various romantic or comical interactions between the original characters from The Simpsons and the original characters (OCs). For example, how the OCs with different personalities fit into the Simpsons' world and interact with Homer, Marge and the others.
One idea could be a crossover with 'Futurama'. The Simpsons characters could travel to the future and interact with Fry, Bender and the rest. Maybe Homer gets a job at Planet Express and causes all kinds of chaos with his clumsiness. Another could be a crossover with 'South Park'. The two sets of very different characters would create a really comical and chaotic situation. For example, Bart could get into a prank war with Cartman.
In Naruto Simpsons fanfic, a possible concept is the sharing of cultures. The ninja world of Naruto has its own set of values, traditions and fighting styles. When combined with the modern and comical world of the Simpsons, we might see things like the Simpsons trying to understand the concept of chakra or Naruto enjoying a donut at Moe's Tavern. It could also involve the characters from Naruto helping out in Springfield, perhaps Naruto using his shadow clone jutsu to clean up the town or Sasuke using his Sharingan to solve some mystery in the town.
A great idea for 'the simpsons crossover fanfic' would be a crossover with 'SpongeBob SquarePants'. Imagine Homer getting a job at the Krusty Krab and causing all kinds of chaos. Bart could also become friends with SpongeBob and they get into mischief together. Additionally, a crossover with 'Scooby - Doo' would be exciting. The Simpsons could join the Mystery Inc. gang to solve a mystery in Springfield, like a haunted mansion that turns out to be a scheme by Mr. Burns to scare people away from a piece of land he wants to buy.
One interesting concept could be the clash of different mythologies. For example, if Nyarlathotep were to cross over with Norse mythology, the chaos he represents could disrupt the order of the Nine Worlds. Another concept might be the interaction between Nyarlathotep and modern-day characters. It could explore how an ordinary person would react to the presence of such a malevolent entity from Lovecraftian lore. Also, the idea of Nyarlathotep influencing different historical events in a crossover fanfiction can add a new layer of depth, like how he might have affected the fall of the Roman Empire in a fictional scenario.
One interesting concept could be the combination of different alien species from various sci - fi universes with the Space 1999 setting. For example, mixing the Goa'uld from Stargate with the Moonbase Alpha crew. It could create really unique power dynamics and storylines.
One interesting concept could be Momonga in a different game world, like being transported to a fantasy RPG world. He might use his unique skills from the original setting to survive and thrive there.
One interesting concept is the collision of different character personalities. For example, when a heroic character from one universe meets a morally ambiguous one from another. Another is the exploration of different power systems. How would a magic - based character fare against a technology - driven one? Also, the cultural clashes can be fascinating. Different universes might have unique social norms and values, and seeing how characters adapt or react to these differences can create engaging storylines.
In Avatar 2009 crossover fanfiction, a cool idea is a crossover with a post - apocalyptic setting. The Na'vi could be faced with the challenges of a world destroyed by humans in a different way. They might have to deal with new threats and also learn from the survivors of the apocalypse. Also, a crossover with a superhero universe could be fascinating. Picture the Na'vi getting superpowers or having to deal with superheroes coming to Pandora.