A Hades OC can play the role of a powerful ally. With their underworld - related powers, they can assist the Avengers in dealing with threats that have a connection to the afterlife or dark magic. For example, if there's a villain raising an army of the dead, the Hades OC can use their power over the dead to stop it.
They could be a source of conflict within the Avengers. Their different values and methods, which are influenced by the Underworld, might clash with the Avengers' more heroic and moral - based approach. For instance, the Hades OC might be more willing to use extreme measures to defeat an enemy. However, through this conflict, the characters can grow and learn from each other. Also, the Hades OC could be a key in exploring new storylines related to the supernatural side of the Marvel universe.
First, give your Hades OC a unique backstory. Maybe they're a descendant of Hades who has been banished from the Underworld and ends up on Earth. Then, consider their powers. They could have some control over the dead or shadows, like Hades in Greek mythology. For example, they might be able to summon shadowy minions to fight alongside the Avengers. Also, think about their personality. They could be brooding and mysterious, which would contrast well with the more outgoing Avengers. This would make for an interesting dynamic in the fanfiction.
OC could also be a character from the background of one of the existing Guardians. Maybe they are an old friend from Star - Lord's past on Earth that he thought was lost. Their reunion could stir up old memories and emotions, and also introduce new plot elements such as a hidden treasure or a secret mission that only they know about.
A Kaguya OC can play the role of a catalyst. They can bring new conflicts or solutions to the existing problems in the Naruto world. For instance, if they possess unique powers from the Kaguya lineage, they might be hunted by villains who want to use those powers for evil, which in turn can lead to new adventures for the main characters.
She might be the heart of the family. In the Avengers fanfiction, without her glasses, Darcy could be more approachable and empathetic. She could be the one who helps the Avengers deal with their emotional problems. For instance, if Iron Man is having a crisis of self - doubt, she could sit down with him and have a heart - to - heart talk, using her own insecurities without glasses (like not feeling as confident without that familiar look) to relate to him.
It could be a villain. The male dragon OC might hoard all the gold and treasures in the Lonely Mountain, and the dwarves and Bilbo have to figure out a way to get past it. This is similar to Smaug in the original story but with your own unique take on the dragon's character.
They could be a disruptor. For instance, they might interfere with the Holy Grail War by changing the rules of the game. Just like a hacker in a real - world game, they could make Servants fight against their will or create false quests for the Masters.
They can be a source of inspiration. For instance, their passion for dance might motivate the Turtles to pursue their own hobbies more seriously. Or they could be a sidekick, using their dance skills to help the Turtles in combat, like distracting enemies with flashy moves.
The male OC could also be a rival to Rhaenyra. He may have his own claim to the throne or be part of a group that opposes her rule. This would create a lot of tension and conflict in the fanfiction, making for an exciting read.
They can play the role of a love interest. For example, an OC could be a new vampire who catches the eye of Stefan or Damon. This would add a new dynamic to the love triangles that are so common in the show. Or they could be a mentor figure. An older, more experienced vampire OC could guide the main characters through some of the more difficult situations they face, like dealing with new vampire hunters.
He could be a valuable fighter. His powers would allow him to take on powerful foes.