The OC goddess can be a very wise character. Maybe she has lived for thousands of years and has amassed a great deal of knowledge about different realms and magic. So, she can often offer Thor valuable advice when he is facing difficult decisions. She might also be a very empathetic character. When Thor is feeling down or has lost hope, she is the one who can understand his pain and give him the emotional support he needs.
She can be characterized as powerful. For instance, she could have the power to manipulate cosmic energy, which is far beyond what normal Asgardians can do. This makes her a force to be reckoned with in the fanfiction universe.
Tiamat could also be characterized as cunning and calculating. In an Overlord fanfiction, she might be constantly scheming to gain more territory or influence. She would use her intelligence to manipulate other characters, whether they are aware of it or not.
One common storyline is the OC goddess being a powerful ally to Thor in his battles. For example, she might use her unique powers, like the ability to control the elements, to help Thor fight against his enemies such as the Frost Giants. Another storyline could be a romantic relationship between Thor and the OC goddess. They meet, and over time, they fall in love as they discover each other's strengths and personalities. A third type of storyline could involve the OC goddess having a mysterious origin that Thor helps her uncover, and in the process, they both grow and learn more about the realms they inhabit.
The OC could be a character with a mysterious past. Maybe they have a hidden power that they are not fully aware of. Natsu, Mirajane, and Erza sense this mystery and are drawn to help the OC uncover their past. As they dig deeper, they find that the OC has a connection to an ancient magic that was thought to be lost. This discovery not only changes the OC's understanding of themselves but also has a significant impact on the relationships within the group.
The Oc could be characterized as a bit of a rebel. Maybe they don't like the idea of the marriage law at all and constantly challenge it. This would create a lot of tension and interesting interactions with Hermione, who might be more rule - abiding. For example, the Oc could try to find loopholes in the law while Hermione tries to make the best of the situation.
To make the OC stand out, give them a strong moral code that is different from the norm at Hogwarts. Maybe they believe in absolute non - violence in all situations, which would be quite unique in a school where hexes are sometimes used casually. Their family background can also play a role. If they come from a family of magical healers but they have a natural inclination towards chaos magic, it creates an interesting contrast. Also, their speech pattern can be unique. They could use archaic magical terms that no one else uses, making them seem like a walking magical encyclopedia.
The OC could be characterized as extremely headstrong. For example, she doesn't fear Kaname's vampire status and often challenges his decisions. This would make Kaname, who is used to being in control, both frustrated and intrigued. It would add an interesting dynamic to their relationship as he tries to figure her out.
Swagger can be characterized as confident in Fitz fanfiction. He might walk into a room and immediately draw attention with his self - assured attitude. This confidence could be both an asset and a flaw, as it might lead him to take risks without fully thinking them through.
Android 21 can be characterized as a complex character. She has her gentle side shown through her love for cooking, but also her powerful and potentially dangerous side as an android. In fanfiction, she could be portrayed as a character who is constantly struggling between her two natures. As for Cell, he can be shown as a villain who has the potential for change. His arrogance and power - hunger could be his main traits, but also his ability to adapt and learn could be explored in fanfiction.
To develop a believable male OC in Thor fanfiction, start with his backstory. Where is he from? What kind of family does he have? For example, if he's from a small village on Midgard, his values might be different from those in Asgard. His skills should also be well - thought - out. If he's a great archer, explain how he learned that skill, like being taught by his father who was also an archer.
Start with a strong concept. It could be something like the OC being from another dimension and getting stuck in the Avengers' world. Then, build the story around that. Focus on the character development of both Thor and the OC. Let their relationship grow organically. Also, include some of the other Avengers to make it feel like a part of the whole universe. Write engaging dialogue and exciting action scenes to keep the readers hooked.