The father could be Caleb in a really unexpected twist. Imagine how that would change the dynamics between Alison and Hanna. It could also be one of the older guys in Rosewood that we don't know much about, someone who has his own secrets. Maybe it was a drunken mistake at a party. Or, in a more far - fetched but interesting idea, it could be a character from Alison's past that we haven't seen in the show yet, like an old boyfriend from when she was away.
One idea is that the father is Noel Kahn. He was always a bit of a wild card in the show. His family had secrets, and if he was the father, it would bring all those secrets to the surface. Another option could be that it's someone related to 'A'. This would tie the pregnancy into the main mystery of the show. It would mean that 'A' has a personal stake in Alison's life in a whole new way, and the liars would have to figure out not only who 'A' is but also how the pregnancy is connected to the 'A' game.
One plot idea could be Alison trying to keep her pregnancy a secret from the other liars at first. Maybe she's afraid of how they'll react or she doesn't want to involve them in her mess. Another could be exploring who the father is and the drama that unfolds as she tries to figure that out. It could also be about her dealing with the physical and emotional changes of pregnancy while still being in the middle of all the mystery and danger in Rosewood.
Ezra could be a likely candidate as they have a complex relationship in the original series. It would add more drama to their already tumultuous love story if he were the father.
Maybe Ezra? Although it would be quite a scandalous twist. Given Ezra's complex relationship with the Liars in the original show, his being the father would create a lot of drama and conflict, especially considering his past secrets.
One possible storyline could be that Aria's pregnancy causes a rift between her and Ezra. Their relationship might face new challenges as they deal with the unexpected pregnancy. Maybe Aria's friends in the Pretty Little Liars group would have mixed reactions, some being supportive while others might be worried about how it will affect their secrets and the group dynamic.
One interesting storyline could be how the character deals with the reactions of her friends. In the 'Pretty Little Liars' world, secrets are a big deal. So, a pregnant character might struggle to keep it a secret from her friends who are already dealing with their own drama. Another could be the relationship with the baby's father, whether it's a love interest from the show or a new character introduced in the fanfic.
Aria could be a likely main character. She's had a complex love life throughout the series. A pregnancy for her would add another layer of drama, especially considering her relationship with Ezra. Her friends would also be very involved as they are always there for each other in the show.
Another storyline might be a time - travel fanfiction. Imagine Emily and Alison going back in time to before all the A - related chaos started. They could try to prevent some of the bad things from happening, like Alison's disappearance. Along the way, they might also discover some long - hidden secrets about their families and the history of Rosewood.
It was Sasha Pieterse. She did a great job of differentiating between Alison and her twin, even though they were played by the same person. She was able to show different personalities and mannerisms for each character, which was really impressive.
Well, sometimes they're like sisters, always looking out for each other. For instance, if one of them gets into trouble, the other is right there to help.
In fanfic, Hanna could be pregnant to show her character development. It could be a way to make her more mature and responsible. Also, it might be a plot device to introduce new characters, like the baby's father or other family members. It gives the writer a chance to explore different family dynamics and how they interact with the existing 'Pretty Little Liars' world.