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.
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.
In a fanfiction where they meet, Elsa could learn a lot from the Guardians. For example, Bunny might teach her about how to better control her powers in a more natural way, as he has a connection with nature. Elsa, in turn, could show them how to build an ice castle in a more efficient and beautiful way. Also, Sandy could communicate with Elsa through dreams and help her overcome some of her fears related to her powers, which could lead to a great friendship between them.
One interesting plot idea could be an alternate universe where the turtles have different elemental powers. For example, Leo could control ice, Raph fire, Donnie electricity and Mikey wind. This would change their fighting styles and how they interact with villains.
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.
In female Autobots fanfiction, one common characteristic is their strong will. They are often depicted as being very determined in their missions. For example, they won't back down from a fight against the Decepticons.
In this fanfiction, Dante could have a unique role. Maybe he uses his skills to help the Autobots understand human culture better. He could introduce them to things like music or art, which could be a really interesting aspect of the story. And the Autobots, in turn, might show Dante some of their advanced technology.