Well, a cool plot for mechagodzilla fanfiction could be that Mechagodzilla is actually a sentient being that has been misunderstood all this time. It starts to communicate with humans through some sort of technological interface. Then, it reveals that it was built by an ancient civilization that disappeared long ago and has its own mission to fulfill that is not necessarily related to destruction. Another idea is that a group of rebels steal Mechagodzilla to use it against a tyrannical government that has been oppressing the people. They have to figure out how to control it and keep it hidden from the authorities at the same time.
One idea could be a story where Mechagodzilla is reprogrammed by a young genius to protect the city instead of causing destruction. Another could be a time - travel fanfic where Mechagodzilla is sent back in time and has to face off against its earlier versions. Or perhaps a fanfic where Mechagodzilla teams up with other kaiju to fight a common, even greater threat.
One idea could be a story where Mechagodzilla is initially built to protect the city from Godzilla, but then they discover a common enemy that forces them to team up. Maybe an alien force arrives that threatens both of them and the planet. So they have to put aside their differences and fight together.
Godzilla is an obvious choice. The dynamic between Mechagodzilla and Godzilla can create intense and exciting stories. Also, Mothra could be included. Her gentle nature could contrast with Mechagodzilla's more mechanical and often aggressive nature. Another character could be King Ghidorah. The three - headed monster could form an alliance or be in direct conflict with Mechagodzilla in a fanfic.
One idea could be exploring the unspoken stories of the ranch hands. Maybe there's a hidden love affair between two of them that has to be kept secret due to the social norms of 1923. Another could be focusing on how a young character dreams of leaving the ranch and going to the big city, but faces many obstacles. And a third idea could be a mystery plot where strange things start happening on the ranch and the characters have to figure out what's going on.
One common theme is the battle between technology (Mechagodzilla) and nature (Mothra). It often explores how these two very different forces interact and conflict.
Another theme is the search for identity. The female Mechagodzilla may be different from the traditional Mechagodzilla, and the fanfiction explores how she figures out who she is in the context of the kaiju world. She could be a hybrid of different technologies or have unique abilities that make her question her origin and purpose.
One idea could be that Spiderman 2099 has to team up with a group of rebels from a future dystopia to take down a powerful corporation that controls the city. They might face advanced technology and dangerous enforcers.
One idea could be a story where a new character from a previously unvisited timeline enters the Xenoverse. This character has unique powers that disrupt the balance of the existing timelines. Another plot could involve a group of characters trying to restore a timeline that was completely erased by a powerful villain. They have to travel through different eras and gather fragments of the erased timeline to bring it back.
Another plot could involve a crossover within the Lookism universe. Maybe a character from one part of the story's setting meets and teams up with a character from a different area they would never have interacted with in the original plot. This could lead to all sorts of new adventures and character developments.
Well, you could focus on the relationships between the characters. Perhaps there are hidden romances or deep rivalries that haven't been fully explored. You could also write a fanfiction where they have to deal with a mole in their group. How would they find out who it is and what would they do to stop the mole from ruining their operations? It would add a lot of suspense and mystery to the story.
One interesting plot idea could be exploring how different characters adapt to the post - apocalyptic world in new and unexpected ways. For example, a character who was once a timid office worker becomes a fearless scavenger.