Stiles would be a very likely candidate as they have a close relationship in the show. Their banter and connection could easily lead to a situation where they end up having a baby together in a fanfiction.
Another possibility could be a new character introduced specifically for the fanfiction. This new character could be a mysterious figure who sweeps Lydia off her feet, and then she discovers she's pregnant with his child, which would set off a whole new chain of events in the story.
Jackson could also be a potential father. They have a history together, and it would add an interesting layer of drama to the fanfiction. Maybe they had a brief encounter that led to Lydia's pregnancy.
One idea could be that Lydia discovers she's pregnant and has to deal with the reactions of her friends and family. Maybe Stiles is the father and they have to figure out how to handle this new situation while also dealing with the supernatural threats in their town.
It could be her long - time boyfriend. They might have been planning for a family in the future, but the pregnancy comes as a bit of a surprise earlier than expected.
I'd recommend 'Lydia's Hidden Powers'. This fanfiction delves deep into Lydia's potential powers that were perhaps not fully explored in the original. It has a lot of action and character development. You'll find yourself hooked from the very first chapter as it builds up the mystery around Lydia's newfound abilities.
It could be an old flame of Lydia's. Maybe someone she had a passionate relationship with in the past and they had a brief reunion which led to the pregnancy.
Another option could be a mysterious figure. For example, a character from another dimension or a new character introduced specifically for this plot twist. This could add an element of mystery and intrigue to the story.
It could be her long - time boyfriend. They've been in a loving relationship for a while, and this pregnancy could be the next step in their relationship journey. Maybe they've been talking about starting a family, and now it's finally happening.
Neji could be a potential father. Their long - standing friendship and mutual respect could have developed into a deeper relationship over time, leading to the pregnancy.
It could be her long - time friend Gary. They've known each other for a long time and there could have been some unspoken feelings between them that led to this situation.
It could be a long - time love interest like Stefan. Their relationship has had its ups and downs, and a pregnancy could add a whole new layer of complexity to their story.
It could be one of her close friends in the story. Maybe someone she has had a long - standing relationship with and the pregnancy was an unexpected but not entirely unwelcome result of their relationship.