One possible fanfiction could be about Bumblebee stumbling upon a cache of Dark Energon. Maybe he initially doesn't realize the danger it poses. He could be curious and start investigating it, which then leads to some strange effects on him, like his systems glitching in new and unexpected ways. This could put him in a precarious situation where his Autobot friends have to figure out how to reverse the effects before it's too late.
One common theme is the struggle between good and evil within Bumblebee himself. Since it's 'Dark Bumblebee', there's often an exploration of his inner darkness and how he copes with it. For example, in many fanfictions, he has to fight off the urge to use excessive force or make morally ambiguous decisions.
One great Transformers Dark Bumblebee fanfiction is 'The Darkened Path of Bumblebee'. It delves into a darker side of Bumblebee where he has to face some internal struggles after being exposed to a strange energy source. The story has some really intense action scenes and interesting character development.
Galvatron in the 'Transformers: Dark of the Moon' fanfiction can be a really interesting character to explore. He could be depicted with enhanced powers, or perhaps a different backstory that ties into the events of the movie in unique ways. For example, he might have formed unexpected alliances with other Transformers, either for his own gain or to achieve a common goal against a greater threat.
The story of Transformers Dark of the Moon is mainly about the Autobots and the Decepticons' continued battle. Sam Witwicky gets involved again. There are secrets related to the Transformers' past on the moon that are uncovered. The Autobots and humans have to team up once more to face the threats from the Decepticons who are up to their evil schemes as always.
One possible fanfiction could be about Cyclonus trying to find his true place in the events of 'Transformers: Dark of the Moon'. Maybe he discovers a hidden power within himself during the chaos of the war. He could be on a quest to prove himself to the other Transformers, or perhaps he's caught in a moral dilemma between different factions.
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.
You can try searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms usually have a wide range of Transformers - related fanfictions, including those involving Bumblebee and Dark Energon.
In the story of Transformers Dark of the Moon, Sam Witwicky is a central human character. He has been involved with the Transformers for a while. On the Autobot side, Optimus Prime is crucial. He is the strong and noble leader of the Autobots. Bumblebee is Sam's friend and a very popular Autobot. Megatron, on the other hand, is the fearsome leader of the Decepticons. He is always plotting and trying to gain power. There are also other Autobots and Decepticons that play important roles in the battles and the overall story.
It's mainly about the Transformers' adventures. There are epic battles between the Autobots and the Decepticons. It likely involves their fight for something important on Earth during the events related to the 'Dark of the Moon' story.