One common theme is redemption. Megatron has a long history of being a villain, and in many fanfictions, Bumblebee becomes the catalyst for his possible redemption. For example, in stories where they are stranded together, Bumblebee's positive attitude might start to make Megatron question his actions.
One popular 'Transformers Prime Bumblebee x Megatron' fanfiction is 'The Unlikely Bond'. It explores a scenario where Bumblebee and Megatron are forced to work together during a crisis on Cybertron. The story delves into their complex relationship, with Bumblebee's determination to see the good in Megatron and Megatron's internal struggle between his old ways and a new path.
One great Bumblebee and Megatron fanfic could be about their unexpected alliance. Maybe in a universe where they have to team up against a greater threat. They start off distrusting each other but as time goes on, they learn to respect one another's skills.
Well, Bumblebee could try to escape by building a device from the scraps he finds in Megatron's place. He's a resourceful Autobot. He might be able to create a communication device to call for help or a weapon to fight his way out. He could also look for any weaknesses in Megatron's security. Maybe there's a power source that, if disrupted, would open all the doors. Bumblebee could also try to form an alliance with some of the other captives or minions in Megatron's lair who might be disgruntled and want to escape as well.
The fanfiction might also explore the relationship between Bumblebee and Megatron in a more emotional way. Maybe Bumblebee discovers a softer side of Megatron that was hidden under all that aggression. It could be that Megatron has some regrets about his past actions, and Bumblebee becomes the one he confides in. Or perhaps Megatron sees in Bumblebee a potential future for Cybertron that he once hoped for but thought was lost. This could lead to a very unique and unexpected bond between the two characters.
There's a fanfic that delves into Megatron's past and how Bumblebee's actions in the present can somehow influence it. It's a bit complex but really engaging as it weaves in and out of different timelines, showing how these two characters are connected in ways we might not have expected.
In a world where the Transformers and Megatron's universe collide, Optimus Prime finds himself in an unfamiliar realm. He discovers Megatron has formed an unlikely alliance with a group of humans. Optimus is initially skeptical but realizes they must work together to face a new common enemy, a powerful energy - sucking creature from another dimension. The story unfolds as they learn to trust each other and combine their strengths.
A female Megatron can also be seen as a symbol of female empowerment in the context of the usually male - dominated Transformers world. She can break the gender norms and show that a female can be a powerful leader in this fictional world. For example, she can lead the Decepticons just as effectively as the male Megatron, if not more so. She might use her femininity in ways that the male version couldn't, like using charm or manipulation in addition to brute force.
A female Megatron in fanfic could have a different backstory. She might not have had the same experiences as the male one. This could lead to different relationships with other characters. For instance, her interactions with Starscream could be less about power struggle and more about cooperation. It could also influence how the Autobots view the Decepticon leadership.
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.