In OC fanfiction involving Tywin Lannister and the Starks, Tywin's strategic mind is a central aspect of his portrayal. He is always looking for ways to strengthen his house's position. The Starks, on the other hand, are known for their integrity. An OC could be a healer, for instance, who treats the wounded from both sides during a battle. This OC's presence might lead to some unexpected interactions between Tywin and the Starks, like Tywin seeing the Starks in a more sympathetic light due to the OC's influence.
Often, Tywin is in a position of power over Sansa. So, he may interact with her in a condescending or manipulative way. For instance, he might use his authority to force her into certain decisions.
Often, there's a plotline where the OC is a servant or a low - born character who rises to prominence and has to deal with the politics of Tywin Lannister and the Starks. They might be caught in a web of lies and intrigue as they try to serve both sides without getting killed. Also, a plotline could involve an OC as a mage or a seer who foresees the destruction that the feud between the two houses will bring and tries to stop it.
At first, it could be very tense. Tywin is used to being in control and having things his way, and the Stark oc would likely have her own ideas and values. So, they might start off butting heads. But as time goes on, they could start to understand each other better. The Stark oc might see that Tywin has his reasons for his actions, and Tywin could come to respect the Stark oc's strength and integrity.
In such fanfiction, the relationship can be complex. Tywin Lannister is a complex character. An OC (Original Character) might be drawn to his power and authority at first. But his cold and calculating nature could also create conflict. For example, the OC might try to humanize him, which would be a difficult task considering his reputation.
To develop the character, consider his backstory. What was his childhood like? Did he have a special tutor or mentor? His experiences outside the Lannister stronghold are also crucial. If he travels and meets different people, it can change his views. For instance, if he meets a group of poor peasants and sees their struggle, it might make him more empathetic. Also, his moral compass can be different from his father's. He could be more inclined towards justice and fairness, which would lead to conflicts within the family.
Well, in some fanfictions, Sansa might learn from Tywin about power and leadership. Since Tywin is a master of political intrigue, Sansa could start to pick up on his strategies. For example, she could use his teachings to gain more influence in the court, while also trying to keep her Stark identity intact. This would create an interesting dynamic between them as she tries to navigate the dangerous world of the Lannisters.
The novelty of original characters. They can bring new perspectives to the world of Tywin Lannister. For example, an OC could be from a different social class and show us how Tywin interacts with those he normally wouldn't deal with.
Some fanfictions have a plot where the OC has some knowledge or ability that Tywin wants to use for his own gain. As they work together, feelings start to develop. There might also be a plot where the OC is from a rival family, and their relationship is a secret that could have major consequences if discovered, adding a lot of suspense to the story.
One plot idea could be that Tywin, seeing Sansa's value as a political pawn, decides to use her in a different way than originally planned. Instead of marrying her off to Tyrion, he takes her under his wing to teach her the ways of politics in Westeros. This could lead to an unlikely bond between them as Sansa tries to navigate the dangerous world of the Lannisters while still holding onto her Stark identity.
One plot idea could be Arya, in disguise, getting close to Tywin as a servant in King's Landing. She could overhear his plans and use that knowledge to try and undermine the Lannisters from within. Another could be a scenario where Tywin discovers Arya's true identity but decides to keep her alive for some strategic reason, perhaps to use her as a bargaining chip against the Starks. And a third idea might be a story set in an alternate universe where Arya and Tywin form an unlikely alliance against a common, greater threat, like a White Walker invasion in the south before the events at the Wall.