Who could be the main antagonist in 'harry turns into a monster girl fanfic'?
Maybe it's a group of purist wizards who form a secret society. They are determined to 'purify' the wizarding world by getting rid of anyone or anything that is not a normal human wizard. Harry, as a monster girl, becomes their prime target. They use dark magic and underhanded tactics to try and capture or kill Harry.
There could be an ancient magical being that has been awakened due to some imbalance in the magical world caused by Harry's transformation. This being views Harry as an anomaly and wants to destroy him to restore the world to its previous state. It has powerful magic and a horde of minions at its disposal, making it a formidable antagonist for Harry.
Who could be the main antagonist in a 'gumball turns into a girl fanfic'?
It could be an evil wizard who was the one who actually caused Gumball to turn into a girl in the first place. The wizard has some ulterior motives, like using Gumball's new form to gain power or to cause chaos in the town. He tries to prevent Gumball from finding a way to turn back and keeps creating obstacles for Gumball and her friends.
Who could be the main antagonist in a 'deku turns into a girl fanfic'?
It could be a villain who is obsessed with creating chaos through strange transformations. This villain might have targeted Deku specifically because of his status as a rising hero. They want to see how Deku will cope with being turned into a girl and use it to undermine his confidence and hero image.
Who could be the main antagonist in a 'link turns into a girl' fanfic?
Ganon could still be the main antagonist. Even though Link has turned into a girl, Ganon's goal of taking over Hyrule remains the same. He might underestimate Link in her new form, which could give Link an advantage. For example, Ganon might not expect the girl - Link to be as strong or resourceful as the male Link, but she proves him wrong.
Who could be the main antagonist in an 'izuku turns into a girl fanfic'?
Perhaps a jealous classmate who has always been in Izuku's shadow. Now that Izuku is a girl, this classmate sees an opportunity to undermine her. They spread rumors about how Izuku's transformation is some sort of cheat or that she's not the same reliable person she was as a boy. This classmate's actions and attempts to sabotage Izuku would make them the main antagonist.
Who could be the main antagonist in an 'ash turns into a girl fanfic'?
It could be a jealous trainer who doesn't like the attention that girl - Ash is getting. This trainer might try to undermine her at every turn during Pokemon battles.
Who could be the main antagonist in 'Aang turns into a girl fanfic'?
There could be an ancient evil spirit that was released when Aang turned into a girl. This spirit feeds on chaos and the disruption of natural order. It sees Aang's transformation as a sign of the world being out of balance and tries to make it even worse. It might target Aang specifically because he is the Avatar and his new form gives it an opportunity to create more disorder.
Who could be the main antagonist in a 'sonic turns into a girl' fanfic?
Maybe a new character could be the main antagonist. This character could be jealous of Sonic's speed and popularity. So, when Sonic turns into a girl, this antagonist sees it as a chance to frame Sonic for various crimes in this new form. This would make Sonic's friends doubt him and isolate him, all part of the antagonist's plan to take Sonic's place as the hero of their world.
Who could be the main antagonist in an 'Edward Elric turns into a girl fanfic'?
Perhaps a new alchemist who is jealous of Edward's skills, even in his new form. This antagonist might see Edward as a girl as an easy target to discredit. They could spread rumors about how Edward's transformation has made him less capable in alchemy, when in fact it's just their way of trying to undermine him.
Who could be the main antagonist in a Ben 10 Monster Girl Quest fanfic?
It could be Vilgax. He might see the chaos caused by the monster girl transformations as an opportunity to finally defeat Ben. He could try to use the monster girls' new powers against Ben or even find a way to control them to do his bidding.
Who could be the main antagonist in a 'Harry is turned into a girl' fanfic?
Perhaps the main antagonist could be a dark magic user who was the one responsible for turning Harry into a girl in the first place. Their goal might be to disrupt Harry's life and his role in the fight against the dark forces. This antagonist could continue to create obstacles for Harry as a girl, like trying to prevent him from getting the help he needs to change back or causing trouble for his friends who are trying to support him.