Some fanfictions also explore the idea of redemption for Sylar. Peter could play a role in this. He might be the one to show Sylar a different path. Their relationship then becomes about Sylar's journey towards redemption with Peter as a sort of guide or at least an influence. It's interesting how fanfiction can take these two characters and create so many different interpretations of their relationship.
Identity is also a common theme. Both characters have complex identities. Peter has the ability to absorb powers which can make his identity a bit fluid as he takes on different abilities. Sylar's identity is often tied to his search for more powers and his struggle with his own nature. Fanfictions might explore how their identities are shaped by their powers and their relationship with each other. Additionally, the theme of sacrifice could be present. Maybe Peter has to sacrifice something to stop Sylar, or Sylar might have to sacrifice his old ways to become a better person.
One idea could be that they have to face a lot of challenges together. Maybe they are on the run from some sort of organization that doesn't approve of their relationship. And the pregnancy adds another layer of difficulty as they try to find a safe place to stay.
There are also Sylar crossovers with other shows like 'Smallville'. In this type of fanfiction, Sylar might end up in Smallville and have encounters with Clark Kent. His powers would be a contrast to Clark's, and the story could explore how a villain like Sylar would fare in a world with a different kind of hero.
In fanfiction, they often start as adversaries. Sylar being the power - hungry villain and Peter as the hero. But then their interactions can change. They might have intense power battles where they test each other's limits.
Some fandom - specific forums might also have Sylar and Peter fanfiction shared by the members. You could try searching for Heroes (the show they are from) related forums and see if there are any hidden gems there.
There's a fanfiction called 'Sylar's Redemption through Peter'. In this story, Peter becomes the catalyst for Sylar to change his ways. It shows a journey of Sylar struggling with his dark side and Peter guiding him towards the light. It's a very character - driven piece that explores their complex relationship in depth.
Some Sylar OC fanfictions focus on a romantic relationship between Sylar and an OC. These stories often delve into the idea of Sylar finding love and how that could transform him. Maybe the OC is a normal human who sees the good in Sylar despite his dark past, and through their relationship, Sylar learns about empathy and self - control.
Some fanfictions might focus on a time - travel scenario. For example, Peter and Sylar are sent back in time and have to deal with their past selves. This could lead to interesting character developments as they see how they used to be and how they can change things for the better.
They might discover new powers or abilities within themselves or the baby. For example, the baby could inherit a combination of their powers in a unique way. This would bring a whole new set of challenges and adventures as they try to understand and control these new powers.