Writers may start with a concept that is opposite to what Harry is known for. Since Harry is often associated with light magic, a writer might create a super power that involves using a bit of dark magic in a controlled way. This could be something like being able to tap into the power of dark emotions, but use it for good. They also play with the idea of enhancing Harry's senses. If he has super - sensitive hearing, he could detect hidden enemies or secret passages. And by exploring different combinations of magical elements and non - magical concepts, they come up with truly unique super powers for Harry Potter.
Fanfiction writers often draw inspiration from existing magical elements in the Harry Potter series. They might combine different magical properties, like taking the invisibility feature of the cloak and adding the teleportation ability of a portkey to create a new artifact. They also think about what could enhance the story, for example, an artifact that can break any spell, which would create interesting plot twists.
One super power often seen in such fanfiction is elemental manipulation. A character could have the power to control all four elements - fire, water, earth, and air - with great precision. They might be able to create huge firestorms to fend off dark wizards or summon tsunamis within the Hogwarts lake. There are also super strength powers where a wizard or witch can lift extremely heavy objects, like the entire Hogwarts castle, which comes in handy during battles against powerful dark forces. And of course, there's the power of invisibility without the need for an invisibility cloak, which gives a character an edge in spying or sneaking around.
When it comes to super powers in Harry Potter fanfiction, they often disrupt the original storylines in various ways. Consider a power like telekinesis. If a character has this power, they can manipulate objects from a distance. This could change how the Triwizard Tournament tasks are completed. Instead of using magic in the traditional ways shown in the original story, they could use telekinesis to move things around. Also, if a character has the power of mind control, they can influence the actions of other characters, including the main characters like Harry. This can lead to a completely different set of actions and reactions, ultimately changing the whole direction of the story.
In fanfic, Harry Potter might have enhanced occlumency powers. He could be able to completely shield his mind from Voldemort and other dark wizards without much effort. This would give him an edge in battles as his thoughts would be completely private.
In some fanfictions, Harry's wand has the power of elemental control. It can summon fire, water, earth, or air to protect Harry or attack his enemies. For instance, when facing a group of dementors, he can use his wand to create a wall of fire.
There are often super powers related to magical creatures in Harry Potter super powers fanfic. For instance, a character might have the ability to transform into a Phoenix at will, which would give them the power of rebirth and the ability to fly extremely fast. Another super power could be the gift of seeing the future with absolute clarity, not just in glimpses like Trelawney's prophecies but seeing entire timelines. And there could be a super power where a wizard can communicate with all magical plants and use them as allies, for example, making the Whomping Willow stop attacking or getting the Mandrakes to help in a fight.
Some writers make dementor powers more psychological. Instead of just sucking out happy memories physically, they can make it so that the dementors can influence a person's thoughts and make them doubt their own happy memories, as if the memories are being corrupted from within.
Fanfiction writers often start by looking at the gaps in the original story. For instance, if Harry seemed to overcome something too easily or there was an unexplained event, they might attribute it to a hidden power. They then build on that idea, maybe having Harry discover this power gradually. For example, he could start having strange dreams that lead him to find out about a power of seeing the future that was dormant in him all along.
Another way is by combining different magic systems. Fanfiction writers might blend the magic of Hogwarts with other forms of magic from different mythologies. So Harry could end up with powers like the ability to use runes to enhance his spells or the power to call upon the spirits of nature for assistance, which are things not seen in the original series but add a whole new layer of creativity to his special powers in the fanfiction world.
Some writers justify it by saying that Harry is a descendant of a powerful ancient magical line that was long forgotten. This hidden heritage unlocks his godlike powers as he grows older and discovers more about his past. For example, he might find out that his ancestors made a pact with some powerful magical beings, and the powers are now passed down to him.