In the context of fanfiction, 'Greyback fills up Hermione' is a rather strange and concerning phrase. If it's not meant in a literal or inappropriate way, it could be some sort of symbolic or metaphorical use within a very niche and perhaps even a non - canon - compliant fanfic. Maybe it's about Greyback's influence or presence overwhelming Hermione in a story, but without more context, it's hard to say exactly.
This phrase is quite unclear without further reading of the specific fanfiction. It could be a creative and yet disturbing take on the relationship between Greyback and Hermione. It might imply some sort of possession or takeover in the narrative of the fanfic. Fanfiction often explores strange and sometimes uncomfortable concepts, but this one seems particularly dark given the nature of Greyback as a character.
No, it's not likely to be a popular theme. Fenrir Greyback is a menacing and often feared character in the Harry Potter world, and Hermione is a well - loved and positive character. Combining them in such a way as 'fills up' (which is rather ambiguous and could be interpreted in inappropriate ways) doesn't seem like something that would appeal to the general fanfiction audience who usually prefer more positive or at least more in - line - with - the - spirit - of - the - original - work stories.
In most of these fanfictions, Hermione reacts with her characteristic intelligence. For example, in 'The Captive Hermione by Greyback', she immediately starts to analyze her surroundings and look for possible escape routes. She uses her knowledge of spells and potions to try and gain an advantage over Greyback.
In some fanfictions, the relationship between Hermione and Greyback might be a dark and twisted one. It could be used to show the contrast between good and evil in the wizarding world. However, this also poses challenges in terms of character development. Writers need to be careful not to stray too far from the established personalities of the characters in the original Harry Potter series.
Hermione would likely react with her characteristic intelligence and courage. She would probably try to use her vast knowledge of magic to find a way to escape or at least resist Fenrir. For example, she might try to use spells that could incapacitate him temporarily. She would also be likely to try and outwit him in conversation, looking for any weaknesses or loopholes in his plans.
Well, it often adds a lot of dark and tense elements to the story. It can show the brutality of the wizarding world. Hermione might become a symbol of resilience. Her friends could be driven to seek revenge or justice, which would drive the plot forward in new and unexpected ways.
One common theme is danger. Since Greyback is a werewolf, there's always the threat he poses to Hermione. For example, in many stories, she has to constantly be on guard against his predatory nature.
The theme of the outsider is often present. Hermione, as a Muggle - born in the wizarding world, and Greyback, as a werewolf shunned by society, are both outsiders in a way. Fanfictions may explore how they connect on that level. Additionally, the theme of mystery is common. There's always the mystery of what Greyback will do next and how Hermione will react, which keeps readers on the edge of their seats.
A possible plotline could be Hermione getting captured by Greyback's pack. She then has to use her wits and magic to escape. Maybe she befriends a young werewolf within the pack and uses that connection to her advantage.
Hermione's character could develop in terms of her understanding of the grey areas between good and evil. Saving Fenrir goes against the common perception of him as a monster. This could make her more open - minded and less judgmental. She might start to see that even the most feared creatures can have a chance at redemption.
It could mean that the fanfiction in question doesn't accurately represent the true essence of the character Hermione. Maybe it has her in a situation or with characteristics that are completely out of line with how she is in the original work.