Who could be the main antagonist in a 'cloud becomes cetra fanfic'?
There could be a group of anti - Cetra fanatics. They believe that the Cetra were an abomination and that Cloud's transformation is against nature. They form an underground organization and use various means, from sabotage to direct attacks, to stop Cloud from fully becoming a Cetra and spreading their influence.
It could be a power - hungry human who fears Cloud's new Cetra powers. This person might see Cloud as a threat to his own plans of domination and tries to eliminate him before he can fully master his abilities.
Maybe an ancient evil that was once sealed away by the Cetra. Now that Cloud is becoming one of them, it senses his awakening power and sees him as a key to breaking free from its prison. So it tries to manipulate Cloud into releasing it, all while Cloud is trying to figure out his new identity.
What could be a possible plot for a 'cloud becomes cetra fanfic'?
Well, perhaps in the fanfic, Cloud gets transported to a time when the Cetra were still a thriving race. He has to adapt to their way of life and in the process, learns their magic and philosophy. He then uses this knowledge to solve a great crisis that threatens both his world and the remnants of the Cetra world. He becomes a sort of bridge between the two cultures.
Who could be the main antagonist in 'Merlin becomes a dragon fanfic'?
It could be Morgana. She might see Merlin's transformation into a dragon as a threat to her own power and plans. So, she tries to stop him from fully becoming a dragon or tries to use his new form for her own evil purposes.
Who could be the main antagonist in 'sonic becomes a girl fanfic'?
It could also be a new villain that is specifically interested in Sonic because she is now a girl. Maybe a villain who has some sort of vendetta against female heroes or wants to use Sonic's new form for some evil experiment. However, Dr. Eggman is so iconic in the Sonic series that he would be a strong contender for the main antagonist role even in this fanfic scenario.
Who could be the main antagonist in 'chell becomes an ai fanfic'?
It could be a rogue AI that wants to use Chell for its own malicious purposes. Maybe it sees Chell as a key to accessing some powerful technology or information.
Who could be the main antagonist in 'percy becomes a killer fanfic'?
It could be an ancient and powerful god who has long been plotting against Percy. This god might be jealous of Percy's power and popularity, so he devises a plan to turn Percy into a killer, knowing that it will lead to Percy's downfall and his own rise in power.
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 'ciel becomes a demon fanfic'?
Maybe the main antagonist is a group of demon hunters. They sense Ciel's transformation into a demon and see it as their duty to eliminate him before he becomes too powerful. They hunt him down relentlessly, making Ciel's life as a new demon very difficult.
Who could be the main antagonist in 'ash becomes a pikachu fanfic'?
It could be a rogue Pokémon trainer who wants to capture Ash - now as Pikachu - for his own collection. This trainer might have a cruel streak and not care about the well - being of Pokémon.
Who could be the main antagonist in 'chichi becomes a saiyan fanfic'?
There's a possibility that an evil wizard or scientist who has been studying the Saiyans creates a new form of threat specifically targeting Chichi. This antagonist could be trying to use Chichi's new Saiyan powers for his own evil purposes, like using her to open a portal to a dangerous dimension or to extract the power from her to create a super - weapon.
Who could be the main antagonist in 'naruto becomes a monster fanfic'?
It could be Orochimaru. He has always been interested in experimenting with new forms and powers. If Naruto becomes a monster, Orochimaru might see him as a perfect specimen to study or use for his own evil plans.