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.
An original character could be the main antagonist. Maybe a mad scientist who was obsessed with creating the perfect hybrid of human and alien, and the monster girl phenomenon was an unexpected result of his experiments. He decides to take advantage of it and use the monster girls to build his own army and take over the world. He would constantly be trying to capture more girls to transform and would be in direct conflict with Ben who is trying to stop him.
Who could be the main antagonist in a 'Ben 10 as a Girl' fanfic?
Maybe a malevolent scientist who has a grudge against female heroes. He believes that only men should have such powers and sets out to take the Omnitrix from Ben and use it for his own evil purposes. He underestimates Ben because she is a girl but soon realizes his mistake.
Who could be the main antagonist in 'ben 10 becomes a girl fanfic'?
Another possibility is that an alien race that Ben has previously encountered and thought was friendly, now turns against him/her because of the change in gender. They might have some strange beliefs or customs that make them view Ben's new form as a threat or an abomination, and thus they become the main antagonists in the fanfic.
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.
Who could be the main characters in a Harry Potter Monster Girl Quest fanfic?
A group of students from different houses could be the main characters. For example, a Gryffindor boy who is curious about the mystery of monster girls, a Ravenclaw girl who has extensive knowledge about the Forbidden Forest where some monster girls are rumored to live, and a Hufflepuff boy who is always ready to stand up for the underdog, which in this case are the monster girls. They join forces on a quest that changes their view of the wizarding world.
Who could be the main antagonist in a 'ben 10 gamer fanfic'?
Vilgax could be a great antagonist. He could hack into the gaming systems to try and defeat Ben in a virtual world where the rules are different. He might use his advanced technology to create digital versions of his minions to attack Ben.
Who could be the main antagonist in a 'ben 10 stranded fanfic'?
It could be a new alien species that Ben has never encountered before. This species could be territorial and see Ben as a threat to their planet where he's stranded. They constantly try to drive him away or capture him, which makes it difficult for Ben to find a way to leave.
Who could be the main antagonist in a 'Ben 10 Nemetrix Fanfic'?
One option could be an alien scientist who is obsessed with the power of the Nemetrix. He wants to study it and use it to create his own super - weapons. He might be from a race that has been at odds with the creators of the Nemetrix for centuries.
Who could be the main antagonist in 'Ben 10 becomes a girl fanfiction'?
It could be Vilgax. He might see Ben 10's new form as a weakness and try to take advantage of it.
Who could be the main antagonist in a Ben 10 Lucky Girl fanfiction?
Hex could also be a main antagonist. He might be jealous of the Lucky Girl's natural powers and try to corrupt her or use her powers for his own evil magic. He could set up traps and illusions to try and capture her, and also try to turn Ben against her so he can deal with them separately.
Who could be the main antagonist in a 'Ben 10 Dressed as a Girl' fanfiction?
The main antagonist could be an alien who has a vendetta against Ben specifically. This alien might be able to sense Ben's true identity even when he's dressed as a girl. He could try to expose Ben and foil his mission or just cause general chaos while Ben is in his disguised state.