There's no way to know for sure without reading the fanfiction. Dave could be an original character created by the fanfic author, or he could be a reimagined version of an existing minor character from the Batman canon.
Well, in 'batman the return of dave fanfiction', it could be that Dave was someone who had been thought lost or forgotten in the Batman story. His return might disrupt the status quo. Maybe he has some new power or knowledge that shakes up Gotham City. He could be an old ally or an enemy with a new agenda, and the story could revolve around how Batman deals with this unexpected return.
I don't know who Dave is in this story. He could be an ordinary person with an extraordinary story, or maybe he's someone known in a specific community.
I'm not sure specifically who Dave is without more information. He could be an ordinary person with an extraordinary story, or someone well - known in a particular community or field.
There's no way to tell precisely who Dave is from just the title 'dave's bread story'. He might be a local baker, someone who just loves baking bread at home, or even a fictional character created to tell a story about bread - making and the associated experiences.
Most likely, Dave is fictional. In many cases when we hear about a name like Dave without any real-life connection or reference, it's assumed to be a fictional creation for a particular story or scenario.
In the 'dave perez big story', Dave Perez could be an activist. He might have fought for an important cause, like environmental protection or social justice. His efforts and the results of his actions could be what the 'big story' is all about. He could have led protests, lobbied for new laws, or started initiatives to bring about positive change in society.
Since I don't know the story, I can't say for sure. But he might be the main character who creates or is associated with the special bread in some important way.