The Bats tend to have favorite civilians, paramedics, cops, that they love to mess with or claim. It gets even worse when multiple Bats favor the same person and try to call dibs.
Danny ends up as one of these people.
It starts when he gets off of work late and finds Red Hood and Red Robin sitting on the curb eating pizza. He hadn't eaten anything all day, and it smelled delicious, and so what few braincells Danny had left scattered and he asks, "Can I have a slice?"
Both vigilantes turn to look at him, then each other, and shrug. They let him take a slice.
It was only the beginning.
Spoiler gets a tired "thanks" saving Danny from a mugging.
Black Bat practically buzzes with glee when she learns Danny knows sign language and helps her speak with a child witness.
Signal gets a more energetic Danny, though also a cautious distance after Signal once smacked into Danny and spilled his coffee all over the poor man.
Nightwing gets the brunt of one of his bad days when Danny decides he's done being held hostage and slips out of the bindings to chuck his shoe at the Riddler. Nightwing hi-fives him later for managing to hit Riddler in the face.
Even Robin has moments with Danny, after catching him taking care of some stray animals amd chasing off idiots who were looking for dogs to put into a recent (and very quickly shut down) dog fighting ring.
When everyone actually figures out Danny is the SAME Danny they all have been seeing around, Bruce has to fight the instinctive headache at the incoming fights. And resist the urge of looking up what seemed to be just a random Gothamite.
Danny at this point just wants a nap. And for these weird undead beings that didn't do well with his ice to stop coming for him. He had student debts to pay.