What are some interesting plot developments in 'Harry Gets the Dark Mark' fanfiction?

Another aspect could be his internal struggle. Harry might have nightmares and visions related to the Dark Mark. He'd be constantly on edge, worried about being controlled by Voldemort. His relationships with his friends, like Ron and Hermione, would be severely tested. Hermione might try to research ways to remove the Dark Mark while Ron would be more impulsive, wanting to directly confront the situation, which could lead to conflicts among them.

In this fanfiction, a really engaging plot development could be the discovery of a hidden connection between the demon and Harry's past. Maybe the demon was once summoned by one of Harry's ancestors and now it's seeking revenge on the Potter family through Harry. As a result, Harry has to not only fight the possession but also uncover the secrets of his family's history to break free from the demon's hold.

One idea could be exploring how the Dark Mark affects the mental state of those who bear it. For example, it might cause nightmares or hallucinations related to Voldemort's will. Another could be a story about a character trying to hide their Dark Mark from their friends in the Order of Phoenix, creating a lot of internal conflict and secrecy.

In certain fanfictions, Dumbledore could get caught in a lie. Maybe he told the students one thing about a particular magical artifact, but then was caught when it was revealed he knew more than he let on. This would create a lot of drama as the students and other faculty members might lose trust in him for a while.

In some 'Nightwing gets captured' fanfictions, he might be captured by a powerful villain like Deathstroke. This could lead to intense fight scenes when his friends come to rescue him. For example, Batman and Robin might team up, using their detective skills to find Nightwing's location.

One plot development could be that Hiccup discovers an ancient technique for building stronger dragon saddles. This new saddle design not only gives him better control over Toothless but also allows him to perform more advanced maneuvers. As a result, he becomes a more formidable rider and his reputation as a dragon trainer grows.

In some 'Adrien gets akumatized fanfiction', his akumatization could be caused by a misunderstanding with his father. This could lead to his akumatized form having powers related to control or isolation, like being able to trap people in a sort of prison made of his negative emotions. The story could then focus on how Marinette, as Ladybug, tries to reach out to the real Adrien inside the akumatized form. She might have to dig deep into their relationship and use memories they've shared to break through to him.

If Harry Potter gets the Dark Mark in fanfiction, it would completely change his relationship with the wizarding world. He'd be instantly seen as a Death Eater, and his friends would be in a state of shock and confusion. His standing at Hogwarts would be in jeopardy, and he'd likely be hunted by the Order of the Phoenix as well as the Ministry, at least until they figure out the truth.

In the 'Harry gets captured by Voldemort fanfiction', Harry could find an unexpected ally within Voldemort's ranks. Maybe a Death Eater who has a change of heart. This ally could help Harry escape or at least send messages to his friends. Another aspect could be that Voldemort performs some dark magic on Harry that gives him strange powers or visions. Harry then has to figure out how to use or overcome these new abilities while still being held captive. It could also be that the wizarding world outside is in chaos due to Harry's capture and different factions start to emerge, some wanting to negotiate with Voldemort for Harry's release and others wanting to go to war immediately.

Maybe the story could focus on Harry trying to find a way to reverse the situation. He could go on a quest to find some ancient magic or a powerful wizard who might be able to help. There could also be a plot where the Ministry of Magic gets involved, either trying to cover it up or use it as a weapon against Voldemort. And of course, there would be the internal struggle for Harry, dealing with his own feelings about Voldemort and this unexpected pregnancy.