One possible fanfiction could be about Bumblebee and Sari going on an adventure together. Maybe they discover a new part of the city that has some sort of strange energy source. Bumblebee, being the curious Autobot he is, wants to investigate. Sari, with her knowledge of the city, helps him navigate through the less - known areas. Along the way, they face some small challenges like avoiding some grumpy construction bots. And in the end, they find that the energy source is actually a new type of power that can help the Autobots in their fight against the Decepticons.
They could team up to solve a mystery in Detroit. Maybe there are strange disappearances that seem to be related to some new Decepticon activity. Bumblebee and Sari start to investigate. Bumblebee uses his sensors to pick up any signs of the Decepticons, while Sari talks to the people who have witnessed the disappearances. They find clues that lead them to an abandoned factory where the Decepticons are hiding. Bumblebee then battles the Decepticons while Sari figures out a way to disable their power source.
Baby Bumblebee could be the center of a fanfiction where he discovers a hidden talent for music. In the world of Transformers Animated, his musical talent could be used to communicate with other beings or even to unlock some ancient Autobot secrets. His friends would be both surprised and proud of him.
One interesting fanfiction idea could be about Baby Bumblebee's first adventure in the world of Transformers Animated. Maybe he stumbles upon a secret power source that he doesn't understand at first. He could be exploring and making new friends among the other Autobots, who are all charmed by his innocent and curious nature.
Bumblebee could develop more patience. Usually quite impulsive, spending time with the more patient Prowl might make him think twice before acting. For example, in a battle situation, instead of just charging in, he might start to analyze the situation like Prowl does.
Maybe Bumblebee loses his memory. He forgets who he is and who Prowl is. Prowl then has to help him regain his memory while also protecting him from the Decepticons who see this as an opportunity to turn Bumblebee against the Autobots.
A fanfiction could revolve around the idea that there is a prophecy involving Bumblebee, Grimlock and this mysterious X. Bumblebee is seen as the key to finding X, and Grimlock is tasked with protecting Bumblebee. Along the way, they face many challenges. Grimlock's dinosaur form might get them out of some tough situations by brute force, while Bumblebee uses his intelligence to solve puzzles. As they get closer to finding X, they learn that X is not what they expected and it has the potential to change the fate of all Transformers.
Another theme might be self - discovery. Sari is a human and Bumblebee is a Transformer. Their relationship can be a vehicle for both of them to learn more about themselves and their respective worlds. Bumblebee might learn about human emotions more deeply through Sari, and Sari could learn about the complex world of the Transformers.
Once upon a time, Bumblebee, the brave and kind Autobot, met Sari. Sari was a curious and friendly girl. Their paths crossed in the city. Bumblebee was immediately drawn to Sari's warm heart. Sari, in turn, was fascinated by Bumblebee's strength and his sense of justice. As they spent more time together, they began to share secrets and adventures. Their love grew slowly but surely, like a budding flower in spring.