In a 'Harry Potter gets angry' fanfiction, he could be enraged when he realizes that some old pure - blood families are still trying to undermine the new order at Hogwarts. His anger might fuel him to confront these families directly, leading to intense magical duels and a struggle for the future of the wizarding school.
In some fanfictions, Harry Potter might be angry at the Order because he feels they are keeping secrets from him. He is used to being in the thick of things and when the Order withholds information, it can make him feel left out and untrusted.
In the 'Harry Gets Angry' fanfiction, Harry might get angry when his reputation is smeared. He has always been in the spotlight, and false rumors can really get to him. Also, seeing the weak or the underdogs being bullied can make him angry. He has a strong sense of justice, so any form of oppression or unfair treatment towards others can stir his anger as well.
He might lash out with his magic. For example, he could send a spell flying at the source of his anger without really thinking. Sometimes, he just glares intensely, his green eyes filled with fury. And he may raise his voice, shouting at those who have angered him.
One common theme is betrayal. Harry often feels betrayed by those he trusts, like the Ministry of Magic or certain teachers, and his anger stems from that. For example, in some fanfics, he discovers that they have been using him for their own purposes.
Perhaps a fanfiction where Harry is angry due to the danger the Goblet of Fire has put his friends in. He realizes that just by being a part of the Triwizard Tournament, his enemies might target his friends to get to him. His anger could drive him to take extra precautions to protect them, and also make him more determined to succeed in the tournament so that he can prove that he's not a coward and that he can handle whatever comes his way.
Well, Harry could marry one of the veelas. Given their beauty and allure, it would add an interesting dynamic to the story. Their relationship could involve Harry having to deal with the jealousy of other wizards and also the cultural differences of the veelas. Or he could marry a descendant of one of the founders of Hogwarts. This would tie in a lot of Hogwarts history into their relationship, and their wedding could be a grand event that unites different factions within the wizarding community who have ties to the founders.
Maybe Dumbledore, if he were still alive in the fanfiction. Dumbledore was highly respected and had a great influence. Knighting Harry would be a way for him to publicly recognize Harry's achievements and heroism on a grand scale.
One example could be a new student being mistaken for a long - lost heir to a powerful wizarding family. Everyone starts treating them differently, expecting great things from them, while the real heir is hidden away. Another might be a character who looks similar to a wanted criminal. They are constantly chased by the Aurors until the truth is discovered. And sometimes, a Muggle - born might be mistaken for a wizard with a dark past just because of some strange magical occurrence around them.
One example of an 'arrogant' Harry Potter fanfiction could be one where the author gives Harry an over - inflated sense of self - importance. Maybe they have him constantly belittling his friends and acting as if he is the only one capable of saving the wizarding world. This goes against the core of his character in the original books where he values friendship and teamwork. Another aspect could be when the fanfiction makes Harry act as if he is above the rules of Hogwarts, which again is not in line with his character who respects Dumbledore and the school's code.
In some Harry Potter fanfictions, you'll see characters showing courage by exploring unknown and dangerous magical realms. They do this to find a cure for a deadly magical disease. This is a big display of courage as they are putting themselves in harm's way. For cunning, a character could be really good at hiding their true magical abilities. They act like they are not very powerful but in reality, they are hiding a great deal of strength. This way, they can surprise their opponents in a fight. There are also fanfictions where a character has the courage to break away from a dark wizard group they were forced to be part of, and they use their cunning to expose the group's secrets.