In some fanfictions, it could be an original character created by the author. Maybe a witch who was the result of an affair that his father had before he married his mother. However, this is completely against the canon of the original books, but in the world of fanfiction, anything is possible.
There could be various storylines involving Heather as an older sister in Harry Potter fanfiction. Maybe she's a Gryffindor like Harry and helps him out in his adventures, or she could be a Slytherin with her own complex motives.
In such fanfiction, it could lead to a whole new dynamic within the wizarding world. Maybe she'd have her own unique powers or play a crucial role in Harry's adventures.
It expands it by introducing new characters into the sister's harem. These characters can bring in new magical abilities, family backgrounds, and storylines. For example, a character from a far - off magical land could join the harem and introduce new spells or magical creatures to the story.
Yes, there might be. The 'Supernatural' world of Sam and Dean and the 'Harry Potter' universe are both very popular, and fanfiction often likes to cross over different fandoms in creative ways. Some fans might have come up with the idea of making Harry Potter be related to Sam and Dean as their sister in a fan - created story.
One possible reason could be jealousy. Maybe the sister is getting more attention from their parents or at Hogwarts. For example, if she is a star student and Harry feels overshadowed.
One common theme is family loyalty. Since they are siblings, the stories often focus on how they support and protect each other. Another theme is the discovery of self. The sister, who may have been hidden or in the background, often has to figure out who she is in relation to Harry and the wizarding world. Also, the theme of facing challenges together is prevalent. They join forces to take on the threats in the wizarding world, just like Harry did with his friends in the original series.
The sister's character could be developed as a strong - willed individual. For example, if she was raised in a difficult situation, like in an orphanage in the Muggle world, she could have a tough exterior but a kind heart. She might be initially distrustful of the wizarding world when she discovers it, but as she learns more about her family and the fight against Voldemort, she becomes more open - minded and determined to help.
In many 'Harry Potter sister fanfic' stories, the sister's character is developed through her relationships. She could have a complex relationship with Harry, maybe starting off as jealous of his fame but then growing to support him. Or she might form a really close bond with Hermione, learning from her and becoming a strong female character in her own right. Her character also develops as she faces challenges in the wizarding world, like dealing with discrimination because she's a Potter. These experiences shape her into a more confident and powerful witch.
One common theme is family. Since it's about Harry having a little sister, it often explores the family dynamic. How they support each other, protect one another, and sometimes even have sibling rivalries. Another theme is identity. The little sister has to figure out who she is in the shadow of her famous brother.