Often, Harry's knowledge of fighting in fanfiction comes from intense self-study and practice, as he realizes the importance of being well-prepared for the challenges ahead.
No. In the original Harry Potter series, slavery is presented as an abhorrent practice in the form of house - elves. Harry Potter is a character who stands against injustice, and depicting him as owning a slave goes against the core values of the series and basic moral principles.
Yes, it could be. It's not a typical concept we usually hear about. Fanfiction usually focuses on new adventures or relationships for Harry Potter, but the idea of him 'fighting' fanfiction is quite novel.
It really depends on the situation. If it's in a magical environment like Hogwarts, Harry might have an advantage with all the spells he knows. But if it's an open area, Ben with his Omnitrix could transform into an alien like Way Big and overpower Harry with his size and strength.
Well, in some fanfictions, the Ministry of Magic might step in and use memory charms to erase the muggles' knowledge. This is to keep the wizarding world a secret as it has always been.
Well, one possibility could be that Harry Potter, with his knowledge of magic, meets the Doctor who has his time - traveling abilities. They might team up to fight some common enemy that threatens both the wizarding world and the universe the Doctor travels. For example, a powerful dark force that can manipulate time and magic.
One way is by his body language. He could be described as always sitting alone in the common room, hunched over, not interacting with others. His eyes might be downcast, showing that he's lost in his own world of loneliness. Maybe he avoids eye contact, as if he's afraid of getting too close to people. The author could also use the setting to enhance this feeling. For instance, describing him walking alone in the empty corridors of Hogwarts at night, with only the sound of his own footsteps echoing, emphasizing his solitude.
In some fanfictions, Harry Potter might learn to fight through intense training with experienced wizards or by discovering hidden magical combat techniques.
Well, it could be that the authors of fanfiction want to explore different aspects of the Harry Potter universe other than fighting. Maybe they're more interested in the relationships between characters or the daily life at Hogwarts.
Often, fanfiction depicts their interaction as intense. Harry, being the hero, is usually in opposition to Grindelwald's dark plans. For example, he might try to stop Grindelwald from gathering more followers or retrieving some powerful dark artifact.
One possible reason could be the Ministry's corruption. In the original series, the Ministry often showed signs of being influenced by dark forces or being overly bureaucratic and not seeing the real threats. So in the fanfiction, this might be a driving factor for Harry to oppose them.