Perhaps the plot focuses on how Delta and the Little Sister survive in a post - apocalyptic Rapture. They could be on a quest to find a new source of ADAM that doesn't involve harming others. The relationship between them could be tested when they meet other Little Sisters and Delta has to decide whether to protect all of them or just his own Little Sister.
The fanfiction about Bioshock 2's Delta and Little Sister often explores their unique relationship. Delta is a Big Daddy, and his bond with the Little Sister is central to the story. It might show his protective nature towards her, and how they interact in the dark and dystopian world of Rapture.
One common theme is protection. Delta is there to protect the Little Sister from the various threats in Rapture.
Delta's character can be developed through his moral choices when it comes to the Little Sister. For instance, if he's faced with a situation where he has to choose between the safety of the Little Sister and getting more ADAM, his decision would reveal a lot about his character. He could also learn new skills or abilities in order to better protect the Little Sister, which would show his adaptability and growth as a character.
A great fanfiction idea could be a Little Sister's rebellion against the established order in Rapture. She starts to question why she has to harvest ADAM and decides to fight against those who control her. This could involve her teaming up with other splicers who also want to change the system in Rapture.
In Bioshock Little Sister fanfiction, the characterization can be really interesting. The Little Sisters are often depicted with a sense of both innocence and otherworldliness. Their relationship with the Big Daddies is a key aspect. Some fanfictions might focus on exploring their pasts before being turned into Little Sisters, adding depth to their otherwise somewhat mysterious personas.
One possible plotline could be that Tenenbaum discovers she is pregnant during the chaotic events in Rapture. This could add an extra layer of complexity to her already difficult situation of trying to deal with the fall of Rapture and the moral dilemmas she faces. She might have to make choices about the safety of her unborn child while also trying to help others.
I'm not sure if you've heard of the fanfiction 'Delta's Female Protege'. It's about a young girl who looks up to Delta and tries to follow in his footsteps. The story is filled with action and emotional moments. It also gives a great view of the Rapture environment from a different angle compared to the original game.
A memorable scene might be the discovery of a Little Sister's hidden memories. In some fanfictions, as the story unfolds, we see the Little Sister recall her life before becoming what she is. This moment of realization, often filled with both sadness and a glimmer of hope, is really powerful. It gives readers a deeper understanding of her character and the tragedy that has befallen her.
A very common theme is redemption. Since Delta has a complex past, fanfictions often involve a female character helping him find redemption or vice versa. Another popular theme is survival. In the harsh world of Rapture, female characters in these fanfictions are often depicted trying to survive alongside Delta.
A plotline could involve the pegasi from MLP using their flying abilities to disrupt the airship battles in Bioshock Infinite. Or perhaps the magic of the ponies could be used to counteract the effects of the Vigors. Another idea is that the ponies' sense of friendship and harmony could start to change the way the people of Columbia interact with each other, leading to a new social order. There could also be a conflict where the leaders of Columbia see the ponies as a threat to their power and try to capture or eliminate them.