Dante moves to Gotham for a fresh start and opens a bakery called
"Dante's Infer-dough" (because he's a pun-loving, quippy dork, no matter how cool or mysterious he acts). He uses his powers to do most of the work (heat core/pyrokinesis for baking & duplication to run the place single-handedly where no one can see).
He also gets ingredients from the Infinite Realms that you can't get on Earth, from Realm-exclusive ingredients to things that are extinct. Super cagey about his recipes, for obvious reasons, but tries to be accommodating to people who need to know the ingredients for health reasons.
Has a sign that says, "START SOMETHING AND I'LL END IT." He doesn't care if you're a civilian, vigilante or rogue, if you cause problems he will HAVE a problem. There's a "NO CLOWNS OR CIRCUS/CARNIVAL SHIT" rule, but he'll allow Harley in if she's not dressed up in her costume.
Red Hood decides to check out the new business, make sure it's not a cover-up for something sinister. I'm a sucker for the whole "gives ecto-infused food to liminal who doesn't know they're liminal" thing, so let's have Dante warm up to the guy and start adding ectoplasm to his orders because he clearly needs it.
Does Red Hood start to fall for the mysterious beefy baker who makes heavenly food? None of your damn business! Do you know who else should mind their business? His family! They noticed his shift in demeanor and are now "subtly" investigating Dante and the bakery out of curiosity. Dante is kinda annoyed that all these vigilantes are sniffing around, because he has to be more careful to not be caught using his powers, but holds to his rule of not starting conflicts.
Things I can see happening in no particular order:
The Batfam losing it when they realize they can't identify some of the ingredients, or that the only match is a food that doesn't exist anymore. Who is this guy and where is he getting this from???
Red Hood trying to strike up a convo about books (the bakery name is literally a reference), only to be heartbroken when Dante admits to not like reading. He bounces back when Dante explains that he struggled with it in school and an asshole English teacher ruined the subject for him. Red Hood is now determined to fix Dante's relationship with literature
Maybe afterwards he installs a little bookshelf in the bakery and Red Hood falls even further
Dante getting to square the fuck up with someone who breaks his very simple rules of "be chill & no clown shit". No one's really shocked by it, this is Gotham and the guy is clearly jacked. People are still impressed by his clear fighting skill. Mostly Hood. The Batfam are adding this to the list of "BAKERY MAN ODDITIES"
Dante side-eyes Nightwing whenever he's in the bakery, because he may not be in the circus now, but Dante can practically smell it on him. If he does anything too circus-y Dante glares at him and taps the sign. The guy is on thin fucking ice.
Anyways, that's what I've got for now, I might come back to this later.