Fanfictions became a way for Harry Potter fans to engage with the story while expanding it online, through their writing.

"The Marauders" number of fans increased to the point it became a “Harry Potter” sub-fandom. There are Harry Potter fans who don’t even know about it.

That is where the book "All the Young Dudes" comes in. The book is a fan fiction written by a fan under the username MsKingBean89. The story is set in the Harry Potter universe, years before the events we follow in the books/movies as we follow the lives of Harry Potter's dad's group of friends.

It became a phenomenon among "The Marauders" fandom, which made it the main book for the default accepted backstory of the original characters. We are introduced to new characters that help expand the narrative as well. The storyline is loyal to most of the canon events in the series and adapted to fit the timeline of the original books.

"All The Young Dudes" opened the pathway to fan's imagination and enthusiasm to continue contributing to the narrative.

Some of these celebrities have commented on it.

As the years go by, the celebrities themselves become too old to hypothetically play the characters, and the fandom is always actively searching for new ones.

Some of them even cosplay the characters. (Cosplaying is the use of costumes and fashion accessories to represent a specific character.)

A lot of the artwork, as well as people's fan casts are shared on social media, especially Tik Tok.

1. Present a solid story world;

2. Make use of different media to tell different but complementary stories;

3. Open space for audiences to participate;

4. Shared authorship – different minds behind different platforms;

5. Diversify the platforms to expand the story.