One idea could be to focus on Frank's backstory before he became the Police Commissioner. Explore his early days in the police force, the challenges he faced, and the relationships he built. This can add depth to his character in the fanfic.
To develop Frank's character, start by researching his personality traits shown in the show. Then, give him new challenges that force him to grow. For example, a political scandal that threatens his position can make him reevaluate his values.
I'm not sure if there is such a specific 'Blue Bloods' fanfic. Fanfics can cover a wide variety of scenarios, but this one might be a bit unusual. It's possible that it exists in the vast realm of fan - created content, but it would take some searching through fanfic platforms to know for sure.
The writing style and tone could make it distinct. If the author of 'blue bloods a perfect oc fanfic' has a more humorous or darker tone compared to other fanfic writers in the 'blue bloods' fandom. The way the story is told, whether it's through a series of flashbacks or a very linear narrative, can also set it apart from other fanfics. And perhaps the author has a different interpretation of the 'blue bloods' lore, which is reflected in how they develop the OC and the overall story.
Perhaps in the fanfic, Joe has made a serious mistake that goes against the family's values or code of conduct. Frank, as the patriarch, feels the need to discipline him in this rather extreme way to teach him a lesson. It could be related to Joe getting involved in something illegal or unethical that could bring shame to the Reagan family.
There could be a fanfic that delves into the backstory of one of the Reagan family members, like Erin. It could tell the story of how she decided to pursue a career in law and the challenges she faced along the way. This would give more depth to her character in the Blue Bloods universe.
One great Erin OC fanfiction is 'A New Beginning for Erin'. It delves into the character of Erin with a new original character added to the mix. The OC brings out different aspects of Erin's personality as they work together on cases. It's a really interesting read that gives a fresh perspective on Erin's story within the Blue Bloods universe.
To write a great Blue Bloods OC Fanfiction, you need to be consistent with the show's canon. Don't go against the established facts about the characters and the story world. Your OC should fit into this world organically. Also, focus on character development. Let your OC grow and change throughout the story. And don't forget about the dialogue. Make it sound natural, like how the characters in Blue Bloods talk. For instance, if you're writing a scene with the Reagan family, capture their family dynamic through the dialogue.
One popular theme is the development of Jamie's character. Writers often explore his growth within the family and the police force. Another theme could be relationships, like his romantic relationships or his bond with his siblings. And of course, there are often themes related to solving crimes in the context of the Blue Bloods world.