An interesting approach would be to make an android OC that has a malfunction that gives them unexpected emotions or abilities. Maybe they experience a form of 'glitch - love' for another character. This could create a lot of internal conflict as they try to understand what they're feeling while also dealing with the outside world's reaction to them. It could also lead to a love triangle type of situation if there are other characters involved.
Look at their experiences. If your OC has been through a lot of abuse from humans, they might be very cautious and distrustful. For example, they could be hesitant to form new relationships, always on the lookout for signs of danger.
One idea could be an OC who is a prototype android with unique abilities that neither CyberLife nor the deviants are aware of. This OC could be caught in the middle of the conflict between humans and androids, trying to find its own place in the world.
First, come up with a unique backstory for your male OC. Think about his past, his family, and what led him to be in the Detroit: Become Human world. For example, he could be an ex - criminal turned informant. Then, decide how he will interact with the existing characters. Will he befriend them or be at odds? And don't forget to give him a distinct personality, like being overly cynical or extremely optimistic.
One great male OC fanfiction in the Detroit: Become Human universe is 'A New Path'. It follows a male OC who is a detective trying to solve cases while also dealing with the new android presence in the city. It has great character development and an interesting plot that really delves into the themes of the game.
One idea could be that some of the androids from Detroit: Become Human find their way into the Avengers' universe. Maybe they are mistaken for new types of advanced technology or even potential threats. For example, Connor could team up with Iron Man. Connor's detective skills and Iron Man's technological genius could make for an interesting combination as they try to solve a mystery that involves both their worlds, like a new form of energy that is causing chaos.
You could focus on the relationship between Connor and Hank in a fanfiction. Imagine if Connor had a different origin, like he was created by a group of rogue scientists who wanted him to be more human - like from the start. This could lead to a whole new dynamic between him and Hank, as they would have different interactions and goals. Also, you could write about how the androids develop new emotions and abilities that were not shown in the original game.
Another possibility is that a spell from the Harry Potter universe affects the androids in Detroit. Maybe a spell makes them gain real emotions and magic abilities. Kara could use her newfound magic to protect Alice in a more extraordinary way, like creating magical shields against anti - android forces.
You should also consider her backstory. Maybe she has memories from before she worked in the club that influence her actions now. Her relationships are important too. How does she interact with other Traci models? Is there a special bond among them? And how does she view humans? All these aspects combined can create a very interesting Traci character.
You could also set the fanfiction in a different time period or location. Imagine if the female OC travels back in time to an ancient Xiaolin Showdown. She could face challenges that are specific to that era, like different rules or more primitive opponents. This would require her to adapt and use her skills in new ways, making for an exciting story.
For a Highschool DxD OC Archangel fanfiction, consider their personality. Are they a strict and by - the - book archangel, or are they more laid - back and willing to bend the rules? Their personality can greatly influence how they interact with the other characters. If they are more rebellious, they might get into arguments with the more traditional characters in the story. Also, think about their backstory. Maybe they were once a fallen archangel who is trying to redeem themselves in the eyes of the heavens by doing good deeds in the Highschool DxD world.