An Immortal OC could be a mentor figure. Since they've been around for so long, they can offer unique insights and wisdom to the younger, less - experienced members of the Justice League.
One idea could be an Immortal OC who has ancient knowledge and uses it to help the Justice League prevent a threat that was foretold in a long - lost prophecy. For example, this OC might know of a hidden weakness in an upcoming powerful villain.
One common theme is the 'fish - out - of - water' story, like when an OC from a normal life suddenly gets thrown into the world of the Justice League. It creates a lot of opportunities for character growth and comedic moments as they struggle to understand the superhero world.
One great 'OC Justice League Fanfiction' is 'The New Hero Among Them'. It's about an original character with unique powers who joins the Justice League. The story focuses on how the OC adapts to the big - league environment and forms relationships with the well - known heroes. It has exciting action scenes where the OC's powers are put to good use against classic villains.
The OC's personality can be very distinct. They could be extremely humorous and use that to lighten the mood during tense situations. This would be different from the more serious natures of some of the Justice League members like Batman. Also, they could have a strong moral code that is not exactly the same as the League's, which would lead to interesting discussions and interactions.
Often in such fanfiction, the Oc related to Old Gods can also be a vehicle for exploring different mythologies. The Justice League already deals with various superpowers and concepts, but the addition of Old Gods and an Oc associated with them can bring in elements from different cultural mythologies. This can make for a rich and diverse story, with the Oc acting as a bridge between the known superhero world and the more mysterious realm of the Old Gods.
The OC shop owner could be a former member of a secret society that has knowledge about the Justice League's enemies. They use their shop as a cover while secretly helping the League by providing intel. For example, they overhear conversations from villains who visit the shop thinking it's just an ordinary place.
An OC (Original Character) villain in the Justice League universe could be really interesting. For example, let's call our villain 'Shadowcaster'. He has the power to manipulate shadows and create illusions within them. In the fanfiction, he could start by targeting the less - known members of the Justice League, like Hawkman. He'd use his shadow powers to make Hawkman question his own reality, causing chaos within the team as they try to figure out what's wrong with their comrade. This would draw the attention of the big guns like Superman and Batman, who then have to figure out how to combat a villain they've never faced before.
In 'justice league unlimited oc fanfiction', the theme of identity crisis is often seen. The OCs are new characters in an established universe, so they struggle with their identity. Another theme is the struggle against prejudice. Since they are original characters, sometimes the other superheroes in the Justice League are prejudiced against them at first. And the theme of growth is also prevalent as the OCs develop their skills and personalities throughout the story.
Writing an OC Saiyan in a Justice League fanfiction is tough. You've got to balance their Saiyan nature with the more heroic and altruistic nature of the Justice League. For example, Saiyans are often more about self - improvement through battle, while the Justice League is about saving the world. Also, creating a believable backstory for the Saiyan that ties into the Justice League's lore can be a headache. And making sure their powers don't overshadow the other characters is a constant worry.