I literally love this idea. But specifically the version where Danny targets the Batfam and they're like?? wtf is happening??? And Jason opens his door to this random kid with a dufflebag of Bat paraphernalia, demanding cash.
Like, imagine that Danny ends up in Gotham - maybe he was disowned after being revealed as Phantom or Gotham is an entirely different realm that he got body-slammed into by accident; either way, he's there and he actually likes it. It's still a brutal, violent dystopian city full of criminals, but there's a general understanding that you mind your business. Which means that if Danny goes invisible in front of two masked robbers, they just mumble about "damned metas" and find another victim. I mean, Gotham literally has Poison Ivy, Clayface, Killer Croc, Mr. Freeze, and Man-Bat. You're telling me a little invisibility, intangibility, and floating is going to genuinely shock most Gothamites? Please. Give them some credit.
And the best part? Gotham has vigilantes. A lot of them. He got the quick rundown from a couple other kids, but there's Batman, Nightwing, Red Robin, Robin, Oracle, Orphan, Spoiler, and Signal, and apparently more who crop up from time to time. There's more than enough vigilantes to keep an eye on Lady Gotham, so Danny is happy to enjoy his own destitute situation without worrying about hero-ing on the side. He's can kind of manage with the Martha Wayne Foundation shelter and a couple ten-fingered discounted items. He's... managing.
When Danny hears about The Application, he thinks it's a joke. Most of the street kids think it is. Until Tara stumbles back into Crime Alley with a shell-shocked expression, a huge plastic bag of BatBurger takeout clutched in one hand and a folded piece of paper in the other.
It's the job application. Tara pins it back up on the Martha Wayne Foundation community board for the next kid to try - it gets folded, crumpled, stained, and torn so much that it almost looks like a 100 year old dollar bill. The writing is barely even legible at this point. Danny stares at it tacked up to the board, taken and returned, so many times that he memorizes the thick Sharpie smear and scrawling handwriting. It couldn't be that easy, could it? Would it be worth possibly being revealed as a "Meta"? And the Wayne family aren't even bad people, can he truly steal from them?? In the end, what makes Danny's decision is thinking about spending the rest of his adolescence in Crime Alley, barely scraping by. If there's even a chance that he doesn't have to, he'll take it.
So, Jason Todd is obviously Danny's first target. He's seen the guy in Crime Alley enough times to tail him with ease. Except... Jason disappears into... the known hideout of infamous Crime Lord, the Red Hood? Uh-oh. Maybe chalk it up to being new in Gotham or not really knowing the whole "Brucie and Dickie Wayne" routine, but Danny catches on almost immediately. If Jason is Red Hood and Bruce Wayne has a bajillion kids who happen to have the exact same physique as the bajillion Bat-vigilantes, then... he's gotta steal from the Bat Cult?? Oh, shit. (Also, the idea of Bruce's own son encouraging kids to steal from him is hilarious, Danny's so down for it now that he knows it's not malicious.)
The thing is that the Wayne family is literally famous. Any time they go out into public, there are people taking pictures of them (such as the viral meme of a sleep-deprived Tim Drake clutching three opened cans of Monster, Redbull, and Celcius. Or Dick Grayson cramming an entire Taco Bell burrito into his mouth at a gala. He'd ordered Doordash to Lex Luthor's mansion). But you know who isn't in the public eye? The Batfam. So, Danny makes a decision that can kind of be considered dumb, and decides to pickpocket Gotham's Bat Cult Vigilantes.
Jason Todd slings his custom-made leather jacket over his motorcycle and turns his back for two seconds. Then he turns around and-??? His fucking jacket's gone?? It was the one with like eight secret pockets, too, damnit!!
Tim Drake is suddenly missing a Robin Batarang?? It's the beginning of his patrol and he hasn't even used his utility belt yet, how did he lose one already? (Yes, he does inventory every time he goes out, he was trained by the literal Batman.)
Dick Grayson drops his escrima sticks while fighting and just... can't find it after? He could've sworn he saw it roll by this trash can, though? He doesn't think much of it, honestly, he's got a ton of spares since it happens pretty often. At least it wasn't one of the electric escrima sticks.
Damian Wayne is next. He's kind of like a feral dog while on patrol, eager to violently lunge towards criminals and moving so erratically that Danny can't really find a great time to nick him. It's a lot easier to just steal one of Damian's daggers from where it's lodged into a criminal's shoulder. Robin is too busy terrifying the rest of Two-Face's gang to care about a tiny red dagger, anyways.
Bruce Wayne is the last victim. Danny tried to nick him one time while out in public. He couldn't help it, Bruce walked straight into Martha Wayne Foundation to speak with the managerial board and Danny happened to be there; it was all too easy to steal the man's delicate gold wristwatch. There's a strict no-cameras rule in the shelter, made to protect the identities of those in need regardless of who they may be outside of the shelter. Everybody knows the Martha Wayne Foundation is a neutral ground. So, there's no fear of a wayward camera catching his ghostly visage when Danny makes Bruce's watch intangible for a mere moment. Except when he squints at the underside, there's a faded engraved "to my dear Martha, from Thomas" in cursive script.
Bruce's wristwatch is returned with its owner none the wiser. (Bruce knows. Even if he hadn't felt his mother's watch slip through his wrist, he would've known anyway since Danny accidentally phased it back on upside down.)
So, it turns out, Batman is the last victim. Danny feels sick at the thought of possibly taking something worth something to the man like back at Martha Wayne Foundation, so he steals a single grape-flavored candy from Batman's utility belt. (Batman pretends not to notice.)
Cue Danny knocking on Red Hood's door in the middle of the night with a plastic bag of miscellaneous Bat Cult Items. He's also wearing Red Hood's leather jacket. It's comically huge on the kid, but Danny loves it - loves how warm it is and now much he can sneak into all the hidden pockets. Plus, finders keepers and all.
Red Hood:... what the fuck.
Red Hood, begrudgingly admitting that he may be a little like Bruce after all: ...okay.
Man, I love Jason-adopts-Danny fics!!!