I'm trying to compile some information on this character. From what I'm told, his first appearance was in Superman: Convergence #1 in 2015, when Lois Lane gives birth.
1st) Was there any story previously told of when Lois became pregnant, or is this the first it was ever mentioned?
2nd) Reading about the story, it talks about a giant dome around Gotham City. What story does this come from? What should I read before this that sets up this plot point?