A prevalent theme is the mystery behind the hypnosis. In many fanfictions, the origin of the hypnosis, whether it's from a powerful Pokémon ability or a magic spell, is a mystery that needs to be solved. Another theme is the transformation of Ash's character. Under hypnosis, he becomes a tool for the hypnotist, but as the story progresses, he gradually breaks free and returns to his original, positive self, which shows the strength of his character.
One common theme is the struggle between the hypnotized Ash and his true self. His friends often play a crucial role in trying to break the hypnosis and bring him back to normal. Another theme could be the power struggle between the one who hypnotizes Ash and those who want to free him.
One possible fanfiction could involve Team Rocket using a new device to hypnotize Ash Ketchum. They might make him do silly things like singing a Pokémon theme song in a really strange voice or making Pikachu do a little dance. But of course, his friends would eventually figure out what's going on and try to break the hypnosis.
One possible fanfiction could be where a powerful Pokémon trainer with psychic abilities hypnotizes Ash Ketchum. In this story, the trainer might have an evil plan to use Ash to steal rare Pokémon. Ash, under the hypnosis, starts to obey commands against his will. However, his Pikachu senses something is wrong and tries to break the hypnosis by using its electric shocks on Ash at just the right moment. Eventually, Ash breaks free and battles the evil trainer.
Well, if Ash was hypnotized to obey commands in fanfiction, it might change the whole dynamic of his adventures. For example, Team Rocket could get hold of the hypnosis method and try to make Ash work for them. But Ash being Ash, even under hypnosis, his love for Pokémon might break through the commands and he could end up turning the situation around on Team Rocket.
One possible plot could be that a villain uses hypnosis on Ash Ketchum to make him do their bidding in Pokémon battles. So instead of using his own strategies, he's forced to follow the commands of the hypnotist. This would create a lot of chaos and challenges for his friends as they try to figure out what's wrong with Ash and how to break the hypnosis.
Maybe a new, mysterious villain who has a grudge against Ash or wants to use his skills for their own evil purposes. This villain might be from a far - off region and has special powers that allow them to hypnotize people. They see Ash as a useful tool to carry out their plans in the Pokémon world.
There could be a fanfiction where Ash is magically bound to obey a mysterious force. This changes his whole approach to Pokémon battles. Instead of his usual impulsive style, he has to carefully plan and execute his moves according to the commands of this force. It makes for a really different and exciting take on his character.
Well, the concept of Ash having to obey is interesting because it can completely change the dynamics of his relationships. His Pokémon, his friends, and his rivals will all interact with him differently. It also allows the author to explore different plotlines and scenarios that wouldn't be possible in the normal Pokémon storyline where Ash is more independent.
The plot could be that an unknown villain hypnotizes Ash. The villain wants to use Ash's skills and reputation to steal Pokémon. Ash, under hypnosis, starts to lead other trainers into traps. His friends are confused at first but then realize he's not himself. They search for a way to reverse the hypnosis, perhaps by finding a rare Pokémon or a special item.
One common plot could be that Ash gets hypnotized by a mysterious Pokémon trainer who wants to use his skills for their own gain. For example, they might want to win a big tournament using Ash's battle knowledge. Another plot could involve Ash being hypnotized and made to forget his friends, Pikachu included, and then his friends have to find a way to break the hypnosis. It could also be that a villain hypnotizes Ash to make him steal Pokémon for them.
It could have a huge impact. His Pokémon journey might take some strange turns. He could be sent on quests by the hypnotist that have nothing to do with his original goals. His Pokémon might have to adapt to following these new, strange commands from Ash who is under hypnosis.