So When Jason Saw Danny Feeling Weak After A Few Weeks (danny Is Starving) - Tumblr Posts
Danny lost his memories and he was in Gotham. All he remembered was that he died and turned into a ghost who can 'disguise' himself like he was still a human living being.
He also remembers his relationships with the ghosts were more of enemies to friends to enemies to a looping cycle kind of way.
Now, Danny doesn't know where he is and how he got here. He needed to get back to his haunt but doesn't know where, his home, forgotten, he doesn't remember his human name.
So, without furtherado, Danny was walking blindly to the crime alley till he encountered some muggers. He's not afraid since he can't just die twice, am I right?
So he just stays still and turned intangible not knowing Red Hood was watching from above but Danny's ghost sense went off, finally noticing a comrade.
The feeling of familiarity made him just transform back to a ghost and floated to Red Hood, "Friend!" Danny cheerfully said, "I'm so glad to find one of my kind!"