Shazam AU, where Billy keeps his powers even when he’s not Shazam. The only reason he turns into Shazam is to keep a secret identity.  Imagine a villain “depowering” him, only to get curbed-stomped by a 10-year-old.

Against his villains, Billy would sometimes threaten to turn 10, because getting beaten by a child does bad things to a guys reputation.
Pre-Identity Reveal, Bruce goes to Fawcett for a business trip and accidentally sees Billy using his powers. Immediately assumes that Clark had an illegitimate child.
Can you imagine Bruce confronting Clark about this but just going: “You know what I’ve seen how you’ve handled a similar situation in the past, I’m going to take care of this. All you have to do is sit there, look pretty, and nod at the right intervals.”
And the Bruce goes to have a conversation with Billy and this slightly feral child is worried Bruce is trying to get him adopted so he’s all: “I already have a home, you’re not going to take me to a secondary location.”
And Bruce just goes: “Yes yes we fully support you and your family, we just think it’s important for you to have a good mentor, someone who can talk to you about how your body is changing and how to deal with it.”
And poor Billy obviously misinterprets: “Blah, I already had the Talk please don’t”
Bruce: “As if I would ever let Clark give you the Talk, what with his track record. But that’s not where I was going with that”
Anyways after a long very winding conversation, Billy ended up on the justice league, like separately from Shazam.
Flash: So how did we end up with a 10 year old on the justice league.
Clark: You know I’m really not sure how that happened and I was there.
Batman: I’m worried he’ll get along very well with my kids.
Lois has the patience of a saint dealing with all her husband’s baby daddies. She’s a fucking amazing step-mother though and she has a co-parenting schedule worked out with Luthor she’s already mentally working Marvel into.
——
Kon swinging by the watchtower when Billy is there: Hey, uh so I just wanted to say I’m here for you, like as a brother. I know Clark is an idiot and that uh… People are sometimes jerks about having two dads… If you wanna talk or something.
Billy so lost and mildly touched: uh… T-thank you?
—-
Tim invites Billy to join the Teen Titans: I get families being complicated, and so do most of the Titans. If you want to hang out with people closer to your age there’s always room at the Tower.
Oh oh Lois ropes Billy into more family time.
Like, “I understand your situation is complicated Billy but we want you to know that you are loved and appreciated by all of your families. Which is why we will be going to the fair this Thursday. You can plan to spend the night with us, don’t worry I’ll clear it with your dad first.”
“Ok so I’ve set aside a weekend for you, Kon, and Clark to all go and spend some time together. It’ll get you a chance to really learn about the other half of your heritage. And don’t worry, it’s the same weekend a bunch of the league are doing a mindfulness retreat together, so Captain Marvel will be occupied as well!”
Billy is still slightly confused but just goes with it. Also no time to unpack everything; he’s a little busy making sure he’s both camping with Clark as Billy and on a retreat as Captain Marvel at the same time.
Okay but can we combine this with the Lex Luthor abruptly turning into Captain Marvel’s number one fan because I want to see what happens
Yes we absolutely can.
So here’s the thing, because of Lois, Lex currently has a great functioning relationship with Kon, who just so happens to be Billy’s half brother. You know, Billy, who’s other dad is apparently Captain Marvel.
This is great because instead of just asking Lois to schedule in a bonding day with Captain Marvel, Billy and Kon like a normal person, Lex comes up with this very elaborate scheme. Which ensures through a convoluted series of events that Superman (and only Superman) is very busy during his normal bonding weekend.
So naturally Lex steps up and says he’ll take over. After all, he should meet with Kon’s brother and his father- you know for family bonding relationships reasons and such. (Lex is absolutely not giddy that his plan is coming together and he gets to meet and hang out with Captain Marvel what are you talking about?) And which restaurant do you think they would like? Do you think he’ll sign my mug?
Poor Kon is like, dad please you’re embarrassing me! And I’m still your favorite right?
(Lois is just shaking her head like: you could have asked me to set up a get together for you, you didn’t have to send robots and the like after my husband. Also when will he be home?)
Billy is very tired but he’s in too deep at this point to turn back. The only option is to keep digging and see what happens.
Okay yes I love it.
Lex trying to spend more time with Billy and Clark is over there like, “This one isn’t even your kid!”
And then Clark comes to some (wrong) conclusions and solemnly informs Billy over dinner one evening that he thinks Lex might be trying to date his dad (Captain Marvel) and Billy spits out whatever he just had the misfortune of consuming and stumbles out a “Sorry, I’ve gotta go. Emergency….thing.”
Clark watching him leave being like, “Poor kid. It must be hard having your someone interested in your dad like that.”
Cue Billy showing up to the watchtower (still as Billy) and confessed everything to the first person he finds, who was not the least bit involved in this whole mess and is still trying to wrap their mind around the fact that this kid is also Captain Marvel, and oh no, didn’t all of them offer him some beer the other day, and oh my gosh are they all terrible examples and so now that person is also having a crisis.
So then someone else walks in on these two people having a crisis and it all quickly escalates and I don’t know what happens next but as far as identity reveals go for Billy I think this is one of my favorite HCs now
@mizzy-pop I agree about Diana. It does fee right.
Okay and what if it was Barry and Hal that Billy found first
Just imagine Hal, just barely back from space, being immediately confronted with this small person in crisis and having no idea how to deal with this and being like what the hell happened while I was gone
Meanwhile Barry sitting there thinking of all the times he was probably a bad influence on Billy. I can’t believe I dared him to do a canonball out of a plane into the sand dunes why was I thinking
And then Diana finds them all because yeah, it does feel so right
Okay, but imagine if that isn’t the whole reveal and Billy just ups and recruits Hal and Barry into trying to help him keep his secret and deal with the mess he made. Also he’s like can one of you mabye set Lex Luther up with a date that’s not one of my alter egos. Thanks.
If either try to protest Billy just goes “hey remember the time that you tried to get me, a child to” and they both instantly agree.
