Maybe the OC White Dragon Emperor gets involved in a multi - realm tournament. He has to battle against various powerful beings from different dimensions. This would not only show his combat skills but also how he strategizes against different types of opponents.
Another plot could involve the OC White Dragon Emperor forming an alliance with an unexpected group. Let's say a group of magical creatures that are usually shunned by the dragon society. Together, they face a common enemy that threatens both their existences and in the process, the OC White Dragon Emperor learns about acceptance and cooperation beyond his own kind.
One interesting plot idea could be Izuku discovers new and powerful forms of the White Dragon Emperor's power that no one has seen before. This could lead to him being able to defeat powerful villains with ease and surprise everyone.
One interesting plot idea could be that the White Dragon Emperor somehow ends up in the Harry Potter universe. Maybe he's sent there as part of a magical experiment gone wrong. He could then use his unique powers to help Harry and his friends in their fight against Voldemort. For example, his dragon powers could be useful in battles against Death Eaters, providing an extra boost of strength and firepower.
Perhaps the dragon OC has the ability to transform into a human - like form. It infiltrates the company of dwarves and hobbits, initially with some ulterior motive. But as the journey progresses, it starts to care for them and uses its dragon powers secretly to aid them against various perils, creating a lot of mystery and suspense in the fanfiction.
Perhaps an OC that is a powerful wizard in the Dragon Ball universe. This wizard OC discovers a dark magic that is threatening to consume the universe. They must then seek the help of the Z - fighters, who are initially skeptical of magic. The OC has to convince them of the danger and together they find a way to stop the dark magic. Along the way, the OC teaches the Z - fighters about the power and responsibility of magic.
One idea could be creating a male oc who is a skilled healer from a far - off land. He arrives in Westeros during a time of great plague and uses his unique knowledge to try and save lives, which gets him involved in the political intrigues of the court. Another could be a male oc who is a master swordsman, self - exiled from his own house due to a family feud, and he ends up joining the fight for the Iron Throne on the side he believes in. A third idea is a male oc who is a scholar, researching the ancient prophecies of Westeros and trying to influence the events based on what he discovers.
Maybe an OC who is a rogue with a mysterious past. They have a personal vendetta against a powerful Templar who has gone rogue and joined the enemy. The Inquisition becomes their means to get close to this Templar and exact revenge. Their skills in stealth and thievery could help the Inquisition in various covert operations.
In this fanfiction, it could be that the Red Dragon Emperor's abilities are mistaken for a new and dangerous form of jutsu. This misunderstanding might lead to Naruto being hunted by certain groups within the ninja world who fear this unknown power. Meanwhile, Naruto has to figure out how to use this power to protect his friends and village, and also how to clear the misunderstandings.
One idea could be the Black Dragon Emperor's powers influencing Naruto's ninjutsu in unique ways. For example, his fire - based jutsus might gain a more dragon - like quality, like the flames taking on a blackish hue and having a more destructive force.
Perhaps a plot where the Crimson Dragon God Emperor has to form an unlikely alliance. For example, teaming up with a group of rebels who initially oppose him but then realize they need to work together to face a greater threat like a cosmic catastrophe that could destroy their world. This would involve a lot of character development and conflict resolution as they learn to trust each other.
One idea could be exploring the backstory of the Dragon Emperor before he was mummified in more detail. Maybe there were secret loves or betrayals that led to his downfall.