One plot idea could be that Bumblebee and Wheeljack have to team up to rescue a group of Autobots trapped by the Decepticons. They use their unique abilities, Bumblebee's speed and Wheeljack's engineering skills, to outwit the bad guys.
Another plot could involve Bumblebee getting damaged in a battle. Wheeljack then takes it upon himself to repair Bumblebee using some experimental techniques. During the repair process, they bond over their shared experiences and dreams for a better future for the Autobots. This could also lead to Bumblebee developing some new abilities as a result of Wheeljack's tinkering.
One plot idea could be that Bumblebee and Arcee have to team up to protect a powerful artifact from the Decepticons. They start off not getting along well due to their different fighting styles, but as they face challenges together, they learn to respect each other and become a great team.
A plot could involve Bumblebee getting damaged and losing his memory. The RWBY characters find him and try to repair him while also helping him regain his memories. As they do this, they learn about the Transformers universe and Bumblebee starts to adapt to the RWBY world, eventually using his unique abilities to help them in a big battle against a powerful Grimm horde and a new villain that has emerged.
One idea could be that Prowl and Bumblebee have to team up to solve a mystery on Cybertron. Maybe there are strange disappearances and they suspect a new Decepticon plot. They start investigating together, with Bumblebee's energetic nature contrasting Prowl's more reserved one, leading to some humorous and tense moments as they try to figure things out.
Maybe a fanfiction where Dark Energon is being used to power a new super - weapon, and Bumblebee has to infiltrate the Decepticon base to stop it. Along the way, he discovers some secrets about the origin of Dark Energon and its connection to the Transformers' past. This would be an exciting plot full of mystery and adventure.
There could be a fanfiction where Bumblebee loses his memory. Arcee takes it upon herself to help him regain it. She takes him to all the places they've been together, shares their memories, and tries to jog his memory. As she does this, she also realizes how much Bumblebee means to her and how important their relationship is. This is a story about friendship, loyalty, and the power of memories.
Bumblebee is often depicted as brave and eager. He's always ready to jump into action, despite his small size compared to some of the other Autobots. His loyalty to his friends is unwavering.
One idea could be a baby bumblebee getting lost in a strange new world on Earth and befriending a young human who helps him find his way back to the Autobots. Another could be baby bumblebee's first encounter with his own abilities and how he accidentally causes some chaos among the Autobots while trying to show off. Or perhaps a story where baby bumblebee discovers a hidden power within himself during a dangerous mission.
A plot idea could be that Bumblebee is the only one immune to the negative effects of Dark Energon. The Autobots use this to their advantage and send him to infiltrate a Decepticon base where Dark Energon is being weaponized. He has to pretend to be under the influence of Dark Energon while gathering intel and sabotaging the Decepticon's plans.
She could be a spy within the Decepticon ranks. Pretending to be on their side while secretly feeding information back to the Autobots. Her small size and ability to transform into a less - conspicuous vehicle would make her perfect for this role.
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.