Fanfiction about them often allows for different interpretations of their characters. Writers can take their basic traits from the original source and expand on them. For example, exploring Elita One's past more deeply and how it affects her relationship with Optimus Prime. This gives a fresh perspective to the well - known characters.
In fanfiction, their relationship could also be explored on a more personal level. Maybe they have a long - lost love story. They could have met before the war and had a deep connection that was put on hold due to the chaos of the war. Writers might create scenarios where they rekindle their relationship while still leading the Autobots.
One idea could be to explore how they prepare for the arrival of their new 'bot. They might have to make adjustments to their living quarters in Cybertron. For example, they could be seen building a special nursery area with all the latest technology to ensure the well - being of their soon - to - be - born child.
To write their relationship development, start with their initial reactions to the pregnancy. Maybe Optimus is initially overprotective and Elita One has to remind him she's still a strong warrior. Then, as the pregnancy progresses, they could have small, tender moments like sharing memories of their past battles and how they hope their child will be like them in some ways.
One idea could be that they are reunited after a long time apart due to their different missions. They have to quickly readjust to each other's presence while also facing a new threat to Cybertron. Another could be a story set in their early days, exploring how their love first developed. Maybe they were initially rivals in some way, but over time they realized their feelings for each other.
One common theme is their past relationship. Writers often explore how they met and what their connection was like before all the battles and chaos. It gives a more in - depth look at their characters outside of the typical action - oriented Transformers story.
Their relationship could be shown through the eyes of a young Autobot who idolizes them. This Autobot could observe their small, affectionate gestures that others might miss. For example, the way Optimus Prime always makes sure Elita One is safe during a battle, or how Elita One gives Optimus Prime a small nod of encouragement when he's making a tough decision.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of Transformers fanfictions, including those about Optimus Prime and Elita One. Just use the search function on the site.
Baby Optimus Prime's character can be developed by exploring his relationships. If he has a mentor figure among the Autobots, his interactions with that character can shape him. He might look up to this mentor and try to imitate their good qualities. His relationship with other baby Transformers or younglings can also be important. He could learn about sharing, cooperation, and friendship through these relationships. Additionally, his discovery of his own strength, both physical and mental, can be a key part of his development. For instance, when he first realizes he can lift a small object that others thought was too heavy for him, it gives him confidence.
The other characters in the Highschool DxD world would have a wide range of reactions. The angels might see Optimus as an unknown factor and be a bit suspicious. The fallen angels might try to manipulate the situation to their advantage. And the normal human students would be terrified at first. But as the story unfolds and they see Optimus Prime's noble actions, they could start to look up to him as a hero, much like how the Autobots are seen as heroes in their own universe.