Who could be the potential antagonist in 'lord of time harry potter fanfiction'?

Perhaps an ancient evil that Gryffindor once sealed away is starting to break free. This entity sees the descendant as a threat because they have the potential to reseal it. So, it tries to corrupt the descendant or stop them in any way possible.

It could be a dark wizard who has mastered the art of domination spells. He might be someone who was once a student at Hogwarts but turned to the dark side due to his thirst for power. He uses his skills to control other wizards and witches, and his goal is to rule over the entire wizarding world.

Hermione Granger would also be a great candidate. She is highly intelligent like a Ravenclaw, but her loyalty to her friends and the fight against evil shows Hufflepuff traits. Her courage in the face of danger is Gryffindor - like, and she has proven to be cunning when outwitting her enemies, which is a Slytherin quality.

Hermione could be one of the characters in the harem. Her intelligence would be an asset to Harry, even as a Dark Lord. She might be torn between her loyalty to the original Harry she knew and her feelings for this new, darker version. Ginny could also be part of it. Given her connection to Harry in the original story, her presence in the harem could add an interesting dynamic, especially if she tries to change Harry back to his old self.

The Order of the Phoenix would definitely be potential allies. They have experience in fighting dark wizards and would be quick to recognize the threat of the Shadow Lord. Their members, like Sirius Black (if he were still alive in the fanfiction), could offer their unique skills and knowledge.

The main antagonist might be a corrupted Ministry of Magic official. They freeze Harry in time to prevent him from exposing their wrongdoings. This official could be working with some dark forces secretly. They might try to keep Harry frozen while they gain more power and influence in the wizarding world. Hermione and Ron would then have to fight against the Ministry's resources to free Harry and expose the truth.

Voldemort could still be the antagonist even if they travel back in time. If they go back to a time when he was already active, like when he was at Hogwarts as Tom Riddle, he could oppose their attempts to change the future or disrupt his plans. He might sense their presence and try to eliminate them.

It could be a dark wizard who wants to use the power of magical creatures for his own evil purposes. He might be trying to control them, or use their parts for dark magic spells. For example, he could be after the horns of unicorns to make a potion that gives him immortality.

Potential characters could range from the well - known witches at Hogwarts to those from other magical institutions. Fleur Delacour could be in the harem, given her beauty and magical abilities. And there could be characters from the wizarding world outside of Britain too. Maybe a Japanese wizard or witch who has unique magical techniques and is drawn to the Harem Lord's power and charisma.

Another potential antagonist could be a jealous rival within Slytherin. This character might be envious of the 'Prince of Slytherin's status and popularity and would stop at nothing to bring him down. This could lead to a lot of internal Slytherin house drama and power struggles in the fanfic.