Shazam identity reveal AU where the league knew Captain Marvel was a child named Billy since day one but he stubbornly refuses to transform or tell his full name for the whole 4 years he’s been on the team and everyone’s so confused because they know like. 95% of his identity already why is he hiding this specific part?

They start thinking he’s some kind of criminal or had a dark past he’s hiding from them. They know so much about him, though. They know he’s homeless, they know he’s had bad foster homes, they know his parents died tragically and his uncle stole his inheritance. he shares everything. Everything except the one thing that would show he truly trusts them. Why? What have they done to convince him they weren’t trustworthy?

Then. He accidentally transforms back during a battle. Batman instantly scans his face with the facial scanner that’s built into his mask because he’s paranoid as hell of course he has one of those. And he sees exactly why he hid it for so long.

The tension in the air is so palpable that the entire league feels it and they look back and forth between them waiting for the bomb to drop.

Cyborg is the one who blurts it out (he IS a facial scanner)

“Your last name is BAT SON??”

Billy groans into his hands in defeat and Batman sighs, finally understanding why the secret was kept so desperately.

From then on the league refuses to call Billy anything other than Big Red Robin or just Big Robin. Robin but big. they call Batman Captain Dad at every possible opportunity. Whenever Billy does something wrong someone threatens to tell his dad on him then call Batman. The robins last names may as well not exist because from then on they are only ever called Damian Bat-son or Red Hood Bat-son or Stephanie Bat-daughter, except for Red Robin who’s called Little Red Robin or, if they’re feeling brave, the Little Red Cheese. The bat children and Billy’s nicknames become so confusing and meshed together that conversations get very confusing and the names just become interchangeable. The press is convinced that Captain Marvel is Batman’s secret love child within a week.

It gets so chaotic so fast, no one knows how this happened but names mean nothing anymore and Batman is getting a DNA test. So much opportunity for chaos!