A great bumblebee brother fanfic might focus on their origin story. How they were created, what their early days were like in the Cybertronian society. It could explore their relationship with their creators and how they grew up together. This could also include their first experiences with combat and how they learned to rely on each other in tough situations.
There could be a fanfic where the bumblebee brothers have to solve a mystery on their home planet. Maybe there's a strange energy source that's causing disruptions, and they need to team up with other Autobots to figure out what's going on. Their brotherly bond would be tested as they face various challenges and make difficult decisions along the way.
One interesting bumblebee brother fanfic could be about their adventures in a post - apocalyptic world. They might use their unique abilities to protect the remaining humans and fight against powerful enemies. For example, Bumblebee could use his speed and communication skills, while his brother could have some other special powers like enhanced strength.
One idea could be a bumblebee fanfic where Bumblebee gets lost on an alien planet and has to find his way back to his team while making new friends among the alien species. Another could be a story about Bumblebee's early days before he joined the Autobots, like his adventures as a young and inexperienced Cybertronian.
A bumblebee human fanfic could involve a bumblebee that can talk to a human and they team up to save their shared environment. The bumblebee might tell the human about the importance of certain plants for its species and they work together to protect those plants from destruction.
Well, a plot idea could be that there is a prophecy about Bumblebee and Megatron. It says that they will either bring about the end of the Cybertronian race or save it. This forces them to interact more and try to figure out what the prophecy means. Another interesting plot could be that Megatron's mind is somehow transferred into Bumblebee's body and vice versa. They have to live in each other's shoes for a while and this changes their views of each other. And then there could be a plot where a new technology is discovered that can end the war, but Bumblebee and Megatron have different ideas on how to use it, leading to a complex relationship and many conflicts.
A great Arcee and Bumblebee fanfiction could revolve around a race. The two are competing in a high - stakes race across Cybertron. Along the way, they face various obstacles and also learn more about each other's driving styles and personalities.
One interesting story could be about their adventures outside of Beacon. They might face new Grimm and form stronger bonds while protecting each other.
One interesting baby bumblebee fanfiction could be about a baby bumblebee's adventure in a magical garden. It discovers new flowers and makes friends with other small insects.
One interesting fanfiction could be about Bumblebee and Arcee teaming up for a secret mission. They might face challenges that test their friendship and combat skills. For example, they could be infiltrating a Decepticon base where they have to rely on each other's unique abilities to succeed.
One interesting 'big brother fanfic' could be about a character who discovers a hidden power within the 'big brother' house. For example, a contestant might find out they can communicate with animals, which adds a whole new layer of drama and strategy to the game.
I'm not sure of specific authors off - hand, but you can often find good ones on fanfic platforms like Archive of Our Own. Just search for 'bumblebee brother' in the search bar, and then look at the works with high ratings and a lot of positive reviews. Those are usually written by talented authors.
Maybe in the fanfic, a young Decepticon who is starting to have doubts about the Decepticon cause meets Bumblebee. Bumblebee tries to convince the young Decepticon to switch sides. This could involve a series of adventures where they face challenges together and the young Decepticon slowly realizes the truth about the Autobots' noble intentions.