The Joker is awfully domestic, in his way. He makes pretty clothes. Nathan's perfectly happy to be a clothes horse for his sartorially-inclined mate. Some of the clothes are distinctly feminine, and Nathan does not wear those, although the Joker could probably talk him into a kilt, even if that's not a Manx thing but only their neighbors.
"Uh, I believe Golden did turn him into a mint, that being the work in question. My staff precog assures me that he's much less dangerous that way. Apparently it takes all the fun out of wreaking havoc."
"Well, I'll give you your three wishes, howabout, and if you run into him in your own world again - I don't expect it, he looked pretty happy to go with Golden - then you'll be more equipped to handle it? I can't unmint him, that's not something wishes can do. But I can tell you my emergency mint containment protocol."
Stella squares off three restricted hexes from her bandolier and hands them over. "These will do anything normal hexagons can do except I don't want people in worlds with no Bells making new mints willy-nilly so they don't do that," she says. "That's stuff on the scale of granting someone a new permanent magical superpower. The mint-containment protocol is: you can only make a wish if the coin is in contact with your skin. They appear that way, but if you wish a coin-repelling envelope around somebody, they can't make wishes. He can make all the coins he wants but won't be able to do a thing with them. Sound like a plan? And please only do this if he makes trouble for you at home. Golden's got him handled in her world, and he could come here even when he was on his asteroid."
"Look, I don't like him any more than you do - actually, no, I probably do like him more than you, but I don't like him - but I trust my precog and I trust my alt," Stella says. "And his template is really useful as a mint. Golden's probably going to be able to save more lives with him in her employ than he ever took, not that that erases the initial crimes."
"How've you been doing?" Stella asks conversationally. "You seem to be covered in blood yet mysteriously uninjured."
"He does have a crush on you, however idiotically he went about demonstrating this before," Stella says.
Stella shrugs. "I'm gonna go have a look in the Belltower." And she teleports up.