For the OC, first define their backstory. Were they from a family affected by the Titans? This could shape their motivation. Then, for the characters in the harem, stay true to their original personalities from the 'Attack on Titan' series. For example, Levi is strict and disciplined, so if he's part of the harem, his affection for the OC might show in his own way, like being extra protective during missions.
To develop the characters, start with their appearance. Describe how they look, their clothing style, etc. Then, consider their goals and dreams. A character might want to become a great Avatar or just find a peaceful place to live. Their relationship with the OC should also be developed. Is it love at first sight or does it grow slowly over time? Also, their relationships with each other in the harem can add depth. Do they get jealous or do they support each other?
Another aspect could be cultural or family - related. If the male OC has a unique family background or cultural heritage within the Attack on Titan world, it could intrigue Mikasa. He could share stories about his family's traditions, and Mikasa, who has lost most of her family, might be drawn to the sense of family that the male OC represents. This could be the starting point of a relationship where they find comfort in each other's presence.
The key is to make their modern origin matter. They could have a modern hobby like photography, and in the Attack on Titan world, they might be fascinated by the landscapes and want to document them in some way. Their modern education could also play a role. If they studied history, they could compare the events in Attack on Titan to real - world historical events. This can give them unique insights. Their character arc could involve learning to balance their modern values with the necessities of survival in the Titan - filled world. They might start out trying to change everything but then realize they need to adapt to some of the existing ways too.
First, think about their special abilities. It could be something like super - strength or the power to turn invisible. Then, give them a unique backstory that ties into the 'Attack on Titan' world. For example, they could be from a family that was experimented on by the military.
One idea could be that your OC is a new recruit in the military and gradually gains the attention and affection of various popular characters like Eren, Levi, and Armin. They are all drawn to the OC's unique skills and personality.
First, give each character a distinct personality trait. For example, if one of the characters in the harem is a gem, maybe she's overly confident but has a soft heart deep down. For the OC, think about their backstory. If they're from another planet, how does that affect their view of Earth and the gems here? Also, consider their relationships with each other. Do they have inside jokes or shared memories? These things can help develop the characters.
For the OC, give them clear traits. If they're shy, show how they react in social situations on the show. For the characters in the harem, think about how their existing personalities would interact with the OC. For example, Heather might be initially mean to the OC but then slowly develop feelings as she sees the OC's inner strength.
First, for the OC, decide on their backstory. If they're from a military background, it'll shape their skills and how they interact with others. For example, they might be more disciplined. For the harem characters, study their original personalities from the series. Revy is tough and independent, so any relationship with the OC should reflect that. Maybe she initially resists the OC's charm but slowly warms up.
When writing an 'Attack on Titan' OC fanfiction, it's important to make your OC believable. Give them flaws as well as strengths. For instance, your OC might be a great fighter but has a fear of heights which can be a problem when fighting Titans on the Walls. Develop their relationships with the main characters gradually. Don't just have them become best friends immediately. Also, research the world of 'Attack on Titan' thoroughly. Know the different factions, the technology available, and the history. This will help you create a more immersive and engaging fanfiction.
Give your OC a distinct personality trait. For example, if they're overly confident in the face of Titans, it'll make them stand out. Also, a unique physical feature like a strange birthmark or a different - colored eye can help. Their backstory is crucial too. Maybe they grew up in an orphanage within the Walls and that has shaped their view of the world and their determination to fight Titans.