Well, it changes it a great deal. The Dementors in the original story were more like mindless servants of the Ministry. But a Dementor Lord would be a thinking, plotting villain. It could strategize against Harry and the Order of the Phoenix, making it much harder for them to fight back.
It completely shifts the power balance. Harry being the Inferi Lord gives him immense and dark power, which alters how other characters interact with him and changes the entire plot's direction.
In the original story, Harry was the symbol of hope for the wizarding world. But as 'Dark Lord Potter', he becomes a symbol of fear. This changes the way other characters are portrayed. For instance, Neville might take on a more heroic role as he tries to oppose Harry. The concept also changes the magical items' significance. The Elder Wand, which was important in the original fight against Voldemort, might be used by Harry for different, darker purposes. Moreover, the house rivalries at Hogwarts could be intensified as Harry uses them to his advantage in his quest for power. His actions as 'Dark Lord Potter' could lead to a split in the wizarding community, with some following him out of fear or the allure of power, and others fighting against him for the sake of the values they hold dear.
The Grey Lord concept often makes Harry more powerful and independent. He is less reliant on the established authorities in the wizarding world. He starts to make his own rules and form his own alliances, which completely changes the power dynamics in the Hogwarts and the wider wizarding community. He also has a different approach to dealing with threats, using his newfound wisdom and power in creative ways. This is in contrast to the more reactive Harry in the original books who often followed Dumbledore's lead.
The concept of 'Dark Lord Harry Potter' in fanfictions changes the original story in many ways. Firstly, the themes of good versus evil are redefined. Harry, as the Dark Lord, challenges the traditional notions of heroism. His actions towards the Ministry of Magic and the wizarding world in general are no longer about protection but about control. His journey in these fanfictions is not one of self - discovery to defeat the Dark Lord, but rather a journey of self - indulgence in power. Moreover, the way other characters perceive him changes. Teachers who once trusted him now fear him, and his fellow students may either follow him out of fear or try to oppose him in secret. It really turns the whole Hogwarts experience on its head.
Technomancy can change the power balance. Wizards who master technomancy may gain an edge over those who rely solely on traditional magic. For example, they could use technological devices to detect hidden spells or curses more easily.
In terms of the overall plot, it can take a completely different turn. Instead of Dumbledore having a master plan to defeat Voldemort, it might be up to the younger characters to figure out everything from scratch. This makes the fanfiction more of a coming - of - age story where the kids have to face the ultimate evil without the safety net of a competent Dumbledore.
It changes the power balance. Instead of the houses competing, they support each other. For instance, in battles against dark forces, the combined strength of all houses makes them more formidable.
The reincarnation can completely change the relationships. For example, if Harry is reincarnated, he might not have the same bond with Ron and Hermione. He could form new friendships that were not possible in the original story.
It's not a very common or popular concept. Harry Potter is typically seen as a hero opposed to Dementors, which are dark and terrifying creatures. Fanfiction usually focuses on more positive or heroic aspects of Harry's character rather than making him a fan of Dementors.
Well, it really depends on the character and personality of the sibling. If they're supportive, it could strengthen Harry. But if they're competitive or have a conflicting personality, it could lead to lots of drama and challenges for Harry in the story.