What are some interesting plot twists in Harry Potter polyjuice potion fanfic?

One idea could be a situation where a group of Hogwarts students accidentally use the Polyjuice Potion and swap identities in the middle of an important exam. It would lead to chaos as they struggle to answer questions in each other's forms.

Well, perhaps a character uses the potion to turn into a teacher to change grades in order to get a friend out of academic trouble. They end up having to teach a class while in the teacher's form and hilarity ensues as they struggle to keep up with the subject matter. It could also lead to some self - discovery for the character about the challenges of teaching.

One interesting plot twist could be that the truth potion is used on a seemingly minor character who then reveals a major secret about Hogwarts' founding. For example, they might disclose that there is a hidden chamber not known to the current staff, filled with ancient magic items.

Luna Lovegood can also be a very creative character in relation to the polyjuice potion. Given her unique perspective on magic, she might discover that the potion has properties that others have overlooked. Maybe she finds that it can be used to communicate with plants or other inanimate objects while in the form of someone who has a special connection to them.

A possible plot is that Ginny accidentally drinks Polyjuice Potion that was meant for someone else. She transforms into an unknown person and gets lost in the wizarding world. Harry then has to find a way to reverse the effect and find her. He might have to go on a journey through different wizarding communities and face various challenges. Along the way, he discovers some secrets about the Polyjuice Potion that he didn't know before, like a rare ingredient that can make the potion's effect last much longer than normal.

Harry Potter himself is quite common. Writers like to put him in situations where he has to use the potion to transform for various reasons, like infiltrating the Death Eaters.

Hermione Granger is quite common. Since she's very intelligent and resourceful in the original series, in fanfiction she often uses the Polyjuice Potion for various purposes, like solving mysteries or getting access to restricted areas.

A possible plot twist is that the marriage contract potion gets mixed up with another potion. So, instead of creating a marriage - bound situation, it creates a situation where the characters have to work together to reverse the wrong potion's effects. This could lead to all sorts of adventures and self - discovery for the characters as they figure out how to fix things.

In a Harry Potter polyjuice potion mishap fanfiction, the person who drinks the potion wrongly might start to exhibit the wrong personality traits. Let's say they were trying to transform into Hermione but due to the mishap, they start acting like Draco Malfoy instead. This would cause chaos as they would be doing things completely out of character for the person they were supposed to be imitating. They might start bullying other students or being mean to their friends, creating a lot of drama and confusion in the wizarding world.

One idea could be a character using Polyjuice Potion to switch with a Death Eater to infiltrate their ranks and gather information for the Order of Phoenix. This would lead to a lot of tense moments as they try not to be discovered.