Give your OC Predacon a backstory. Maybe they were raised in a different environment than other Predacons. If they were found and raised by an Autobot, for instance, it would greatly influence their view of the world. This backstory can explain their motives and actions in the fanfiction. Also, consider their relationships with other characters. Do they have a rival within the Predacon clan? Or a special bond with a particular Transformer? These relationships can add depth to the character.
One idea could be to create an OC Predacon who is an outcast in their own clan. They might have different beliefs or abilities that set them apart. For example, this OC could have the power to communicate with other species in a way that other Predacons can't. This would lead to a lot of internal conflict within the clan as well as interesting interactions with other Transformers.
One interesting Predacon OC fanfiction could be about a young Predacon trying to find its place in a new world. It might face challenges from other species and have to prove itself.
Power and its consequences is also a prevalent theme. The Predacon OC might have unique and powerful abilities. But these powers can attract unwanted attention from both good and bad forces. This can lead to a series of events where the OC has to decide how to use their power responsibly and deal with those who want to use it for their own gain.
One great source could be Archive of Our Own (AO3). There are numerous Predacon OC fanfictions there. You can search for 'Transformers Prime Predacon OC' and sort by popularity or kudos. Some fanfictions might focus on a Predacon OC's journey within the existing storylines of Transformers Prime, like their interactions with the main characters or how they affect the overall plot.
Begin by brainstorming ideas for your Predacon OC. What makes it unique? Is it its color, its shape, or its special skills? Once you have a clear idea of the OC, start building the story around it. You can take inspiration from other Predacon stories or the Transformers universe in general. Outline the major events in the story, such as the introduction of the Predacon OC, the challenges it faces, and how it overcomes them. Remember to add some twists and turns to keep the readers interested.
In The OC fanfiction, 'Ryan Blind' could be a character that serves various purposes. It might be a character who represents a different social class or has a particular skill set that the author wants to explore. For example, if the fanfiction delves into the world of art, Ryan Blind could be a blind artist who has a unique perspective on life. He could also be a character used to create drama or conflict, like being in love with Marissa but facing some obstacle due to his blindness or some other aspect of his character.
Basically, an OC fanfiction involves new characters that the fan imagines and incorporates into the world of the original work. These original characters interact with the established setting and characters, adding a fresh perspective to the story. Sometimes, the focus can be mainly on the OCs, while in other cases, they blend in with the existing cast.