Spearmint (or platonic) prompt/idea
Sorry if it's messy, my brain is freaking scrambled lately
Freshly dead Danny found portal to Mars in Ghost Zone. It was one good thing that came from him getting ghost powers, so he keeps visiting, invisible so he doesn't get caught.
He does get caught, of course, by one M'gann M'orzz. They become secret friends, but Danny tells her he's from Ghost Zone instead of saying he's from Amity Park. But they do get closer anyway, Danny smuggles to her some Earth media she didn't have access to before and takes revenge on people he caught being racist to her. M'gann answers all of his questions about Mars' culture and history and physics and all that, as best as she could (she didn't spent uncharacteristic amount of hours refreshing everything so she could answer, shut up) and teaches him some basics of shielding one's mind. They go flying together and hung out and bond.
They're besties, as much as they can be, when Phantom visits only once every few month and outside of that they have no way of communicating.
And then one day, about two Earth years after they first met, when Phantom shows up, M'gann isn't there.
He doesn't know that shortly after Miss Martian joins Justice League's covert Team, Young Justice.
He does learn about heroine's existence later, but doesn't realize it's his friend, because a) why would he, there are many martian girls and even if he knows that Miss Martian is Manhunter's niece, he has like hundred of them and b) there are probably more Martians who were obsessed with random sitcom from early 80's c) she is green. His friend very much wasn't. That was, like, a big thing.
M'gann doesn't even know to look for Phantom on Earth, though she does ask around for Ghost Zone in the beginning. For all her friend was clearly unhuman, he looked like Earthling, so they may know where he was from. Nobody did, because Ghost Zone is not a term people use for it, even if they somehow know it exists.
And then, by stroke of luck, they meet again. And for the life of me, I can't figure out how it could go.
