A really badass plotline could be Harry having to face a much more dangerous and complex version of the maze in the Triwizard Tournament. Instead of just physical obstacles, there are magical creatures from different realms and dark magic traps. Harry has to use all his skills and knowledge, including some that he's picked up from his interactions with Sirius and Lupin, to make it through the maze alive.
Fred and George Weasley are often made even more badass in fanfiction. They could use their prank - making skills in really creative ways during the Triwizard Tournament, like creating distractions for Harry when he needs it.
A really engaging one is 'Year Four Revelations'. In this fanfic, the author explores the relationships between the characters during Harry's fourth year. It shows a different side of how the students interact and deal with the events of that year. There are some great character - building moments and it's very immersive.
One great 'Harry Potter Badass Harry' fanfiction is 'The Boy-Who-Lived-Again'. In this fic, Harry returns with a newfound confidence and power. He's not the meek boy we saw in some parts of the original series. He quickly masters advanced magic and outsmarts his enemies in a really cool way.
Romance is also a common theme. Harry's growing feelings for Cho Chang, and other potential romantic relationships among the characters are often explored in fourth year fanfiction. It adds an extra layer of complexity to the story as the characters are also dealing with the high - stakes events of the Triwizard Tournament.
I'm not sure specifically as there could be many different interpretations of a 'Harry Potter fourth year retribution' fanfiction. It might be about seeking revenge or justice for something that happened in Harry's fourth year at Hogwarts in the fanfic author's vision.
One great 'fem Harry Potter badass fanfiction' is 'The Girl Who Lived'. In this story, the female version of Harry is portrayed as extremely tough and intelligent. She faces the challenges of the wizarding world with a unique perspective and unwavering courage.
It can be really good. Fanfictions often explore different aspects of the original story. In this one, seeing Harry as a 'badass' in Slytherin might lead to interesting character developments and interactions that we don't see in the official books. For example, it could show how he navigates the Slytherin house politics and still maintains his heroic qualities in a different setting.
Well, one factor is a powerful and confident version of Harry. For example, if he has some new and extraordinary magical abilities that set him apart. Like in some fics where he can control all the elements, that's really badass. Another aspect could be the way he stands up to the villains. If he doesn't wait for them to make the first move but actively hunts them down.
One great 'badass powerful' Harry Potter fanfiction is 'The Lightning in the Night'. In this fic, Harry discovers some ancient magic that makes him extremely powerful and he uses it to take on the Death Eaters in a very cool way. He's not the meek boy we know from the original series but a force to be reckoned with.