Well, in such a fanfiction, there could be a lot of chaos. The Akatsuki members, with their adult personalities and powers, suddenly being babies would mean they are completely helpless. Maybe their comrades would have to take care of them like babysitters. For example, Itachi, who was always so composed, would now be a crying baby in need of diaper changes and feeding.
I think Hidan would be the most difficult. He was always so hot - headed as an adult. As a baby, he would probably be very fussy and hard to calm down. He might throw tantrums all the time and not listen to whoever is taking care of him.
In 'Avengers turned into babies fanfiction', things could get really interesting. The Avengers' base would need to be baby - proofed. Captain America as a baby might still have that sense of justice, but would express it in baby ways like crying when he sees something unfair, like someone taking a toy from another baby. Hulk as a baby might be a little ball of green anger, getting fussy when he doesn't get his way. It would be a complete change of dynamic for the whole superhero group, and their relationships would be very different as they rely on non - superhero adults or other characters to take care of them.
Well, perhaps it could be about a powerful human wizard who accidentally casts a spell on the MLP characters and turns them into babies. Then the story might focus on how the other ponies in Equestria have to take care of these baby versions and try to find a way to reverse the spell.
It could be one of the baby ponies themselves. Maybe the story could be told from their perspective as they experience the world in this new, baby - like state and how they interact with their friends and family who are now taking care of them.
There is a science - fiction story where an experiment goes wrong. A device that was supposed to rejuvenate cells on a small scale malfunctions and affects a whole building of adults. They find themselves with the physical and mental state of babies. Their memories are jumbled, and they can't do basic adult tasks anymore, relying on others to take care of them, like feeding and changing diapers.
I think Hulk would be the most difficult. Even as a baby, he has that temper. If he gets angry, he could cause a lot of destruction. It would be hard to calm him down, and his super strength as a baby might still be considerable, so he could break things easily.
Well, it could lead to all sorts of chaotic and funny situations. Your friends would need constant care and supervision, and it might test your patience and parenting skills!
A common story is about a magical potion that was meant to be a beauty elixir but instead made the drinker regress into a baby. This often happens in fantasy novels where a character is trying to gain something but ends up with an unexpected transformation.
Fanfiction about babies can be really cute. You could start by thinking about the world you want to place the baby in. For example, if it's a fantasy setting, perhaps the baby has some special powers. Spell might refer to the magic spells in such a world that could affect the baby's life. You need to develop the plot, characters, and the overall story arc for your fanfiction.