I think it could be the blacksmith OC who has a strong moral code. For instance, an OC who refuses to make weapons for evil lords or sells his work only to those who he believes will use it for good. This type of character adds depth to the fanfiction and can be very appealing to readers who like complex and morally upright characters.
One common plot is the blacksmith OC creating a special weapon that changes the course of a battle. For example, forging a new type of arrowhead that can pierce dragon scales. Another plot could be the blacksmith OC being kidnapped by an enemy because of his skills. They want him to make weapons for their army. And sometimes, there's a plot where the blacksmith OC falls in love with a noble lady who comes to his forge, which creates a lot of drama as they are from different social classes.
One great blacksmith in the Game of Thrones fanfiction could be a character who forges a special weapon that has the power to change the course of the war. Maybe it's a sword that can cut through dragon scales, crafted from a rare metal found deep in the mines of Westeros. This blacksmith might be an outcast, living on the fringes of society but possessing skills that are unrivaled.
A possible story in the fanfiction could be about a blacksmith who is commissioned by a noble house to create a set of armor for their champion. The blacksmith has to source the finest materials and deal with the pressure of creating something that will not only look magnificent but also be highly functional in battle.
First, research the world of Game of Thrones thoroughly. Know the different regions, cultures, and politics. As a blacksmith, your character could be from the North, where they might specialize in forging weapons for the harsh winters and potential battles against the White Walkers. Start with a backstory for your self - inserted character. Maybe they learned the trade from an old master in a small village. For the plot, you could get involved in forging a special weapon that has a prophecy or significance tied to it. This could draw the attention of various powerful characters in the series, like a lord or a knight, and get you dragged into the political and power struggles.
A blacksmith in a Game of Thrones self - insert fanfiction should have excellent forging skills. They need to be able to work with different types of metals, like Valyrian steel if they're lucky enough to get their hands on it. They should also be skilled in shaping and tempering weapons and armor. Knowledge of metallurgy is crucial. This includes understanding how to make alloys and how different treatments affect the strength and durability of the metal. Another skill is the ability to repair damaged items. In a world full of battles, there will be a constant need to fix broken swords and dented armor.
OC Myranda in fanfiction could be used to explore different relationships. For example, she could have an unexpected friendship with a character that was her enemy in the show. This could lead to some really cool plot twists. Also, the author could change her role in the political intrigue of Westeros. Instead of being just a tool for Ramsay Bolton, she could become a key player in her own right, manipulating the power dynamics in a different way.
The OC Greenseer could act as a guide. They might use their visions to lead characters to hidden treasures or safe havens. For instance, they could show a group of refugees the way to a secret valley where they can survive the winter and the war.
An OC Stark might be more politically astute than the original characters. They could form different alliances, like making a deal with the Iron Bank that gives the North more financial power and influence. This would shift the power dynamics not only in the North but also across Westeros. The original plot of various houses vying for the Iron Throne would be affected as the North becomes a stronger and more independent force.
One great 'Game of Thrones OC Mage' fanfiction is 'The Mage of Westeros'. It has a well - developed original character who is a mage. The story weaves in the complex politics of Westeros while the mage uses their powers to navigate through various challenges.