The male OC Stark heir could be thrust into the role of leadership much earlier than expected due to unforeseen circumstances, like the sudden death of his father. He then has to deal with the challenges of ruling Winterfell, such as food shortages, disputes among the vassals, and the ever - present threat of the White Walkers. He uses his unique skills and the support of his loyal followers to overcome these obstacles and restore the Stark name to its former glory.
One idea for a male OC in the Stark family could be a long - lost cousin. He could have been sent away as a child for some reason, perhaps due to a political intrigue within the family. He might be a skilled swordsman, trained in secret by an old knight who knew his true identity. His personality could be a mix of the traditional Stark honor and a bit of a roguish charm, which he developed during his time away from the family. This would make him an interesting addition to the Stark family dynamics in a fanfiction.
One idea could be an OC who is a healer in King's Landing during Joffrey's reign. The OC secretly tries to undermine Joffrey's cruel rule by using their medical knowledge to help those he persecutes. They might start by treating the families of those unjustly imprisoned. This could lead to a dangerous game of cat and mouse with Joffrey and his cronies as they suspect someone is working against them.
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 possibility could be that the oc, being the son of Drogo, has a claim to the Dothraki leadership. He could strive to unite the Dothraki clans in a different way than Daenerys did. Maybe he focuses on forging alliances with the other kingdoms based on mutual trade and protection rather than conquest.
Perhaps Harry is a Stark and the cave is a place of prophecy. He enters the cave and sees visions of the future of Westeros, including the downfall of his family if certain actions are not taken. He then uses his knowledge from his previous life (if we assume some sort of reincarnation or transfer from his Harry Potter world) and his Stark upbringing to change the course of events. He might form alliances with unlikely characters, train in new forms of combat or magic found in the cave, and ultimately strive to put a Stark on the Iron Throne, all while trying to keep his family alive and the realm in balance.
An interesting plot could be that the Stark family discovers a portal to the Naruto universe. Sansa Stark, being the politically astute character she is, tries to learn about the power structures in the ninja world. Meanwhile, Naruto and his friends are intrigued by the Starks' noble demeanor. They form an alliance to fight a common enemy that somehow threatens both their worlds, like a powerful dark force that has the ability to manipulate time and space.
The personality of a male Stark OC can be developed in multiple ways. First, look at the environment he grows up in. If he grows up in the cold North, he might be more stoic and resilient. His family's influence is crucial too. If his father was a strict disciplinarian, he could be very respectful and obedient, but also have a rebellious streak deep down. He could also be influenced by the magic and superstition in the Game of Thrones world. Maybe he has a connection to the old gods and is more spiritual than other Starks. This could affect his decision - making and how he views the world around him. For example, he might see signs from the gods in everyday events and base his actions on those interpretations.
It could be that Arya is tape - gagged during a mission gone wrong. She was infiltrating an enemy stronghold but was discovered. Now, she has to figure out how to free herself and complete her mission while being silenced. This would show her determination and survival skills even in a difficult situation.
One idea could be that the male OC is a foreign noble who arrives in Westeros with unique skills and knowledge. He catches the attention of various female characters through his chivalry and different way of thinking. For example, he might be an expert in some form of magic not known in Westeros, and this intrigues characters like Daenerys, who is also associated with magic. Another plot could involve him being a healer, and as he travels through the Seven Kingdoms, he helps the sick and wounded, which endears him to many women, including those in positions of power like Margaery Tyrell. They see his selfless nature and are drawn to him.
Another great OC could be a Stark - like character who is not actually related by blood but was adopted into the family. They might have a strong sense of loyalty to the Starks and be involved in the political intrigues of the North. They could be a key player in battles, using their own unique battle tactics that they brought from their previous life before being adopted.