Well, it depends on the fandom you are interested in. For example, if it's a superhero fandom, you might look for stories that focus on the growth and adventures of the male child characters within that universe. Fanfiction.net could also be a place to start your search.
Some popular platforms to find male child fanfiction include Archive of Our Own (AO3). You can search for specific tags related to male characters and relevant story themes there.
One great 'fnaf x child reader fanfiction' is 'A Little Friend in Freddy's'. It has an interesting plot where the child character forms a unique bond with the animatronics. The story is well - written, with vivid descriptions that make it easy to imagine the spooky yet fascinating world of FNAF.
One popular 'hetalia x child reader fanfiction' is 'A Little Friend in the Hetalia World'. It often features cute interactions between the Hetalia characters and the child reader. Another one could be 'Child's Adventures in Hetalia', which has interesting storylines about a child exploring the Hetalia universe.
Well, one popular Silver x Lyra child fanfiction might be 'Silver and Lyra's Little Adventure'. It often shows their relationship in a really cute way, like them exploring the Pokémon world together with a child - like wonder.
One great undertale x child reader fanfiction is 'A Small Adventure in the Underground'. It has a really heartwarming story where the child character interacts with the undertale characters in a very innocent way.
Finding great 'catwoman x child oc fanfiction' can be a bit of a hunt. You might want to join some fanfiction groups or forums dedicated to Catwoman. There, fans often share their favorite stories. A good fanfic in this category could explore the idea of the child oc having a special power that catwoman discovers and decides to protect the child from those who would misuse that power. It could also show how the child oc's innocence affects catwoman's more cynical view of the world.
I've heard of a fanfiction where Golden Child and Infinite members participate in a survival show together. It shows their competitiveness but also how they support each other. You can search on fanfiction - specific websites using the tags 'Golden Child' and 'Infinite' to discover more stories like this.
Another great one is 'Childhood of the Rivalry'. It explores how their different family backgrounds influenced their personalities even as children. For example, Naruto's loneliness due to being an orphan is contrasted with Sasuke's burden of his clan's expectations. It really fleshes out their characters in a new and interesting way during their childhoods.
There is this fanfiction called 'Harry as a Child: Unseen Tales'. It tells some stories about Harry's childhood that were not covered in the original books. It gives more details about his life before Hogwarts, his relationship with the Dursleys, and his first inklings of magic.
One popular vampire child fanfiction is 'The Vampire's Young Heir'. It tells the story of a young vampire child trying to find his place in the vampire world. Another is 'Vampire Child's Adventure' which has exciting plot twists.
One great child Snape fanfiction is 'The Young Snape's Adventures'. It delves into his childhood at Hogwarts, showing his early interactions with other students and teachers in a very vivid way.