They would be very protective. Autobots are known for their sense of justice and protecting the weak. So, they would immediately surround the reader to shield them from any further harm. Bumblebee might be the first to approach the reader gently, trying to communicate in his beeping way to let the reader know they are safe now.
The Autobots would likely be very protective. They are heroes after all, so they would immediately sense the vulnerability of the abused reader and do whatever it takes to keep them safe from harm. They might also be gentle and patient, understanding that the reader has been through a lot.
The Autobots would surely be outraged. They would immediately start planning a rescue mission. Optimus Prime would likely lead the charge, gathering a team of the bravest and most capable Autobots to go after Megatron and get Jazz back.
Some Transformers could be indifferent. They might see fanfiction as something that has little to do with their real missions and existence. Bumblebee is a popular character, but not all Transformers would care about the stories made up about him in fanfiction. They are more focused on their own tasks and the overall well - being of their kind.
One common theme is friendship. Usually, the human forms a deep bond with the Autobots, like in many stories where they start as strangers but end up being like family. Another theme is adventure. They often go on quests together, either to find a new energy source or to defeat the Decepticons.
One interesting 'human autobots fanfiction' could be 'The Autobot's Human Ally'. It tells the story of a young human who stumbles upon the Autobots and forms a unique bond with them. They go on adventures together, fighting against the Decepticons.
Bumblebee was an action sci-fi adventure movie released in 2018. It was directed by Travice Knight and starred Hayley Stanfield, Jorge Landenberg Jr., John Senna, and others. The film told the story of an 18-year-old girl who found a scarred Bumblebee in an abandoned car park in a seaside town in California. The film faithfully restored the G1 setting of the Transformers series on the big screen and received widespread praise and recognition. It was also an offshoot of the Transformers movie series and was Bumblebee's first solo film. The film had its premiere in Germany in December 2018 and was released in the mainland of China in January 2019.
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.
Another might be Captain America and Optimus Prime. Captain America's strong moral compass and leadership skills would pair well with Optimus' own leadership and sense of justice. They could lead their respective teams in a united front against a common foe in the fanfiction. For example, they could be strategizing how to take on a combined force of Hydra and the Decepticons.
One interesting crossover could be a story where the Avengers and Autobots team up to fight a common enemy like Ultron who has somehow allied with the Decepticons. The Avengers' superpowers combined with the Autobots' advanced technology would make for an epic battle.