They usually keep his intelligence and his sense of mystery intact. In many of these fanfictions, Snape uses his knowledge not just for potions but also to understand his partner better. His past traumas also play a role in how he approaches the relationship. For instance, his loyalty to Lily might influence how he views love and commitment in his new marriage.
Often as a complex figure. He's still the reserved and somewhat prickly man we know, but in the context of marriage, his softer side might start to show. For example, he may be more protective of his partner.
In these fanfictions, Snape is often portrayed as someone who is initially clumsy in matters of the heart despite his high intelligence. His strict and often cold exterior starts to thaw as the story of his marriage progresses. His relationship with the other characters in the Harry Potter universe also affects his married life, like how his interactions with Harry might change now that he has a family of his own.
They often show him as a deeply conflicted and damaged individual. His past experiences, like his difficult childhood and the complex relationships in his life, are used to explain his tortured state. For example, his unrequited love for Lily might be explored in more depth, and how that has tortured him over the years.
In many of these fanfictions, Snape is often portrayed as a complex and misunderstood figure. He is shown as having a deep - seated sense of loyalty, whether it's to Hogwarts or to the memory of Lily. For example, in some stories, he acts as a sort of guiding spirit for Albus Severus, using his past experiences to help the young Potter navigate the challenges at school.
Often, fanfictions show a very strained relationship between them. Given Tobias's likely abuse of Severus in the original story, many fanfictions expand on Severus's internal struggle with his father. For instance, Severus might be constantly haunted by memories of his father's drunken rages.
One common theme is redemption. Snape has a lot to be redeemed for in the original story, and his relationship with Harry in these fanfictions can be a way for him to find that redemption. Another theme is the breaking of stereotypes. Snape is often seen as the strict and mean teacher, and Harry as the hero. Their marriage challenges these traditional views. Also, the theme of forgiveness is often present. Harry has to forgive Snape for his past actions, and Snape has to forgive Harry for being James Potter's son.
There's 'A Snape's Marital Adventure'. It shows a different side of Snape, where he has to navigate the challenges of married life while still being the brooding Potions master we know from the original series. It has interesting character interactions and a unique take on his relationships.
In many fanfictions, their interaction starts with suspicion. Snape is a very guarded character, and a female Harry Potter would be an unexpected presence. So, at first, he might be cold and distant.
Snape's character changes in his relationship with others too. He becomes more involved with the Hogwarts community as he is now responsible for Harry. He might start to collaborate more with other teachers, like McGonagall, who he previously had a rather cold relationship with. His attitude towards the students also changes as he realizes that they are just kids trying to find their way, much like Harry. This is a big shift from his usual strict and often unforgiving self.
Some fanfics make Snape more openly vulnerable. In the original books, he's very guarded, but in fanfics, he might show his true feelings more easily. For example, he could be more open about his love for Lily to other characters.
When crossed over with other fantasy worlds, like Narnia, Snape's loyalty and his sense of right and wrong are further explored. He might have to choose sides between the forces of good and evil in Narnia, and his decision - making process shows more depth to his character. Also, his relationships with new characters force him to grow and change in different ways compared to the original Harry Potter series.
In some fanfictions, Severus Snape's character develops by becoming more open - minded towards Muggles. He might start off with his typical wizarding - world prejudices, but through various interactions, he begins to see Muggles in a new light. For example, he could meet a Muggle scientist whose thirst for knowledge reminds him of his own love for potions, and this changes his view.