The plot involves the Autobots and Decepticons' ongoing struggle. It might include their battles on Earth and in space, with Optimus Prime playing a central role in the fight for the future of their race and the planet Earth.
One great 'Transformers Watching The Last Knight' fanfiction is 'Cybernetic Observations'. It delves into the Transformers' unique perspectives while watching the events of the movie. The author does a wonderful job of showing how they might react to the human - Transformer interactions and the battles that unfold.
One idea could be to focus on the interaction between the Autobots and the characters from 'The Last Knight' universe. For example, how would Optimus Prime react to the ancient secrets and magic in that world? Another inspiration could be the concept of transformation in both. The Transformers can transform physically, while in 'The Last Knight' there might be metaphorical or magical 'transformations' of characters. You could explore how these different forms of transformation intersect.
First, do a lot of research on the Transformers universe, especially the lore and characters in The Last Knight. Know the rules, like how the Transformers function, their relationships, and the overall plot of the movie. Then, develop your OC. Give them a clear personality, backstory, and motivation. For example, if your OC is a human helping the Autobots, why are they doing it? Are they in it for adventure, or do they have a personal vendetta against the Decepticons? Next, create a solid plot that involves your OC in a meaningful way. Don't just have them tag along. They should contribute to the story. Also, pay attention to the dialogue. Make it sound natural for both the humans and the Transformers. And finally, proofread your fanfiction carefully to avoid any grammar or spelling mistakes.
One idea could be an OC who is a mechanic with a special ability to understand ancient Cybertronian technology. This character could be found by the Autobots and end up helping them repair an important artifact. They might have a backstory of being an outcast in their human community because of their obsession with machines, but in the Transformers world, their skills are highly valued.
In a Transformers and Bumblebee crossover fanfiction, Bumblebee could lose his memory and the other Transformers have to help him regain it while also protecting him from the Decepticons who see this as an opportunity to take him out. They go on a journey through different planets and encounter various strange species along the way.
One possible fanfiction could be about a female Bumblebee's origin story. Maybe she was created in a secret Autobot lab, different from the traditional male Bumblebee. She could have unique abilities that set her apart, like being able to communicate with certain alien species that the other Autobots can't. This would add an interesting dynamic to the Transformers universe as she helps the Autobots in their fight against the Decepticons in ways that were previously unimagined.
Once upon a time, there was a bumblebee transformer. He met a female transformer on a mission. They fought side by side against the Decepticons. During the battle, they started to notice each other's unique features. Bumblebee was attracted by her courage and quick thinking. After the battle, they often met to share their experiences. And gradually, love blossomed between them.
One possible fanfiction could be about Baby Bumblebee's first adventure. Maybe he gets separated from the other Autobots and has to find his way back on his own. He might encounter some small challenges along the way, like crossing a stream or finding shelter from a storm.