Another aspect could be that the humans in the fanfiction are not just passive observers. They can actively participate in the Transformers' society. In relation to the sparklings, a human could become a sort of mentor or protector. They might teach the sparklings about things like art or music from the human world, which in turn enriches the Transformers' understanding of different cultures.
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.
You can develop this concept by creating a plot where the Transformers need the help of humans. As they work together, the Transformers get to know the humans better. For instance, they might see a human artist creating beautiful paintings or a musician playing a lovely tune. They start to appreciate the creativity and passion of humans, which makes them seem cute in the Transformers' eyes. Also, the way humans care for each other during tough times can be a big factor in making the Transformers think they're cute.
In a fanfiction, there could be a situation where the Transformers are stranded on Earth for an extended period. They start to interact more closely with humans. One Transformer in particular, a gruff warrior type, is befriended by a small child. The child's innocent gestures and unwavering trust in the Transformer make him see humans in a new light. He begins to protect the child and realizes that these small, seemingly fragile beings have a big heart and are truly cute.
One interesting 'pet humans transformers fanfiction' story could be about a human being found by the Autobots and they decide to keep the human as a sort of 'pet' in a very protective way. The human then learns about their technology and culture.
First, you need to have a clear understanding of the Transformers universe, including their personalities, abilities, and the overall lore. Then, when it comes to the 'pet humans' part, think about how humans would interact with these giant robots. For example, a human might be in awe of their power.
Humans would probably be very scared at first. Some might try to run and hide. Others might try to fight the dinosaurs, but it would be really difficult without proper weapons.
Harry would probably be cautious at first. He's used to strange things in his world, but these giant mechanical beings would be quite different. Hermione would be curious and start asking a million questions about how they work. Ron might be a bit more fearful, especially if the Transformers made loud noises. But overall, they would likely be intrigued and see if they could be allies against any potential threats.