Yes, in some fanfiction interpretations, Harry Potter can be portrayed as a mad scientist. Fanfic writers often take creative liberties and might depict him exploring wild and unorthodox magical experiments, similar to what a mad scientist would do in a non - magical context.
The mad scientist in Harry Potter fanfiction is usually a figure of chaos. They might be working in some hidden lair, away from the prying eyes of the Ministry of Magic. Their experiments could range from trying to bring inanimate objects to life to creating new forms of magic that are either very powerful or extremely dangerous.
One possible reason could be that he's worried about Ginny's safety during the pregnancy. He might be overprotective and his concern comes out as anger.
One of the most memorable is probably a wizard named Malachi in some fanfictions. He's mad because he was rejected by the Ministry of Magic for being too radical in his magic studies. So he goes on a rampage, using his unique and often dangerous spells against anyone who gets in his way. His character is really interesting because he has a complex backstory that makes you understand his madness a bit more.
Power. Just like many villains in the Harry Potter world, the mad scientist in fanfiction often wants power. They think that through their strange experiments, they can gain control over magic in ways that no one else can.
One characteristic could be his disregard for established magical laws. He might attempt to break the boundaries of what is considered normal magic. He could be trying to combine magic with Muggle technology in wild ways, believing that he can create something entirely new and revolutionary. His appearance might also change, with disheveled hair from long hours of work, and his robes might be stained with various potion ingredients. His eyes would have a wild glint of excitement and determination as he chases after his next big discovery.
It could be that Harry made a decision that went against Molly's values. Suppose Harry started using dark magic or got involved with some unsavory characters, Molly, being a morally upright witch, would be furious with him. She might feel that he is setting a bad example for her kids or bringing danger to their world.
A 'Harry Potter' fanfiction can be considered 'mad genius' when it takes the existing lore and twists it in a completely unexpected way. For instance, if it gives a new backstory to a well - known character that changes how we perceive them. It could also be the use of magic in an unorthodox manner. Like in some fanfics, magic is combined with modern technology in a really clever way.
It could be due to jealousy. Perhaps Ginny has been spending a lot of time with another character, and Harry misinterprets their relationship, leading to his anger. In fanfiction, the writers often play with such emotions to create drama.
It's not likely to be a mainstream popular genre in the fanfiction community. While both Harry Potter and the character of the Mad Hatter are well - known, the combination might be a bit too out - there for the general fanfiction readership. However, there could be a small group of dedicated fans who love the idea of mashing up these two universes and creating their own stories within this strange crossover.