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.
The oc son of Drogo might have a unique connection to the horses of the Dothraki. He could be a master horse - trainer and use this skill to gain influence. For example, he could breed a special type of horse that is faster and stronger, and offer these horses to other lords in exchange for support. He could also use his horses to travel quickly across the land and gather intelligence, which would be very useful in the power - hungry world of Game of Thrones.
A great one often has a well - developed OC. The character should have a believable backstory that fits within the 'Game of Thrones' universe. For example, if the OC is from a certain tribe, their customs and values should be in line with what we know about the different cultures in the show.
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.
He could be a wild card. Since he's the son of Drogo, the Dothraki would respect his lineage. He could potentially side with Daenerys if he sees her as a means to achieve his own goals, like bringing glory to the Dothraki name. Or he could oppose her if he thinks she's leading the Dothraki astray from their traditional ways.
One interesting storyline could be an alternate version of their relationship where Drogo doesn't die. Maybe they face different challenges together, like dealing with a new powerful enemy in Essos that unites the Dothraki clans even more under their leadership. Another could be a story where Daenerys uses her new - found power among the Dothraki, with Drogo by her side, to start a more peaceful and prosperous rule, focusing on building a better society rather than just conquering.
One interesting scenario could be a story where Daenerys and Drogo face a new, unknown threat together. Maybe a strange disease starts spreading in their camp, and they have to work together to find a cure, relying on Daenerys' intelligence and Drogo's leadership. This could show a different side of their relationship, more about cooperation in the face of danger.
One interesting fanfiction could be about Khal Drogo's early life before meeting Daenerys. It might explore his rise to power among the Dothraki, his first battles, and how he earned the respect of his men. Another could be a story where he survives the wound that eventually kills him in the show, and how his survival changes the course of the entire 'Game of Thrones' storyline. There could also be a fanfiction that focuses on his relationship with Daenerys from his perspective, delving into his thoughts and feelings about her that we don't get to see much in the original series.
One idea could be exploring how Khaleesi and Drogo's relationship might have developed differently if they had more time together. Maybe they could have united more tribes and created an even stronger force. Another plot could involve them facing a new, unexpected threat together that tests their bond and leadership skills.
One possible plot could be the son growing up in the shadow of his mother's power-hungry ways. He might struggle with the expectations placed on him due to his family name. For example, he could be groomed to be a political pawn but secretly desires a more peaceful life away from the power struggles of King's Landing.
Another place to check is FanFiction.net. There are many 'Game of Thrones' enthusiasts who post their works there. To find Khal Drogo OC fanfics, you might need to do a bit more digging. Try using different search terms like 'Khal Drogo and Original Character' to narrow down the search. However, the quality can vary, so read the reviews or summaries first.
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.