Another difference is in their relationships with other characters. Canon werewolves often have friends and allies among the good wizards. But dark werewolves in fanfiction are usually isolated from the good side. They might be in league with Death Eaters or other dark wizards, and their actions are more likely to be focused on causing chaos and destruction in the wizarding world rather than trying to find a place within it like Lupin did.
Canon werewolves are generally shown as being victims of their condition to some extent. However, dark werewolves in fanfiction might be portrayed as having chosen their dark path, whether it was due to a thirst for power or a desire to serve the dark side. They may also have different physical appearances, perhaps with more menacing features like glowing red eyes or a more hulking and distorted wolf form.
In canon, werewolves like Remus Lupin are complex characters with a struggle between their human and wolf sides. But in fanfiction, dark werewolves are often made more extreme. They may lack the moral compass that Lupin had. For example, they could be more eager to harm others during their transformations.
In the original Harry Potter canon, the Master of Death is more of a theoretical concept. But in fanfiction, it can be much more fleshed out. For instance, in fanfic, Harry might actually be able to control death on a large scale, like preventing natural disasters that cause death in the wizarding world, which is not something in the books.
The werewolves in Percy Jackson and perlia fanfiction could also have different origins. Instead of being cursed like in traditional stories, they might be a natural part of the perlia world, created by some kind of ancient magic or deity. Their appearance might also be different, perhaps more human - like or with unique markings that are specific to their group in the perlia world.
Well, in fanfiction, the characters might have different relationships. For example, some fanfics could explore a romantic relationship between characters that wasn't in the canon. Also, the plot can deviate greatly. Fanfiction might take a side character from the books and give them a much more prominent role, changing the whole story dynamic compared to the official canon.
In canon, Harry has his fair share of hardships but not this kind of extreme abuse. In these fanfictions, the situations are much darker. Canon focuses more on the battle against Voldemort, while the fanfictions focus on Harry's personal and often very difficult experiences with abuse. Also, the relationships in canon are more positive overall compared to the strained and often negative ones in these fanfictions.
Canon Harry Potter is often seen as a hero who follows the rules and values of the wizarding world. However, in dark godlike fanfiction, he may break the rules more freely. He could have powers that are not part of the normal magical repertoire in the books. His relationships with other characters can also change drastically. For instance, his friendship with Ron and Hermione might be strained as his new powers and 'dark' nature set him apart. He may also view the Ministry of Magic in a different light, perhaps as an obstacle to his new - found power and goals.
In canon, Harry is the hero who uses mainly light magic. But in 'Dark Mage Harry Potter' fanfictions, he uses dark magic. Canon Harry is more about following the rules and the good side. Dark Mage Harry breaks the traditional boundaries of magic. For example, he might use curses that are forbidden in the normal wizarding world.
In many Harry Potter fanfictions, the concept of a dark werewolf adds an interesting and often menacing element. It could be a character who is a werewolf but has been turned to the dark side, perhaps by Voldemort or other dark forces. This can lead to some really intense plotlines, like the werewolf attacking Hogwarts students or being used as a weapon in the wizarding war.
In these fanfictions, Harry is often made more cynical and power - hungry. His usual heroic traits are overshadowed by his darker desires. Snape, on the other hand, might be shown as more sympathetic towards Harry's new state. His strict and often cold exterior could crack as he tries to help Harry. For example, if Harry starts to dabble in dark magic, Snape may find himself torn between his duty to Hogwarts and his growing concern for Harry.
Well, in canon, Harry is mainly involved with Ginny. But in a fanfiction with Daphne, their relationship would be more of a slow - burn mystery. Since Daphne is from Slytherin and Harry has his Gryffindor ideals, there would be a lot of initial conflict and mistrust. Their relationship might develop out of a mutual need to survive in a darker wizarding world, rather than the more typical romantic beginnings in the original story.
One major difference is that fanfiction can take dark creatures in unexpected directions. For instance, the Nundu could be a tamed creature in some fanfics, used by a wizard for protection instead of being just a wild and dangerous beast as in the books. The Grindylows might be shown to have a culture of their own in fanfiction, with their own laws and traditions. In the original, they are more of a basic threat in the water. Fanfiction also allows for the creation of new hybrids of dark creatures, which is something that doesn't exist in the original Harry Potter universe.