She’s an OC. Apparently she’s a member of the Newskid Legion (formerly the Newsboy Legion). They’re playing with a lot of Kirby concepts from what we can see, so Vakanai is probably going to get his wish and Darkseid will show up at some point. I just hope other Superman Rogues, particularly ones specific to Superman that he doesn’t share with the wider DCU, are represented as well. Quaid reading All-Star makes me hope Solaris could show up, along with Bizarro and Bizarroworld. But I certainly don’t mind using a lot of the Kirby lore for Superman given so much of it originated in Jimmy Olsen and how involved Superman was with early Kirby Fourth World stories.
Hope Metropolis is a Kirby-esque high tech wonderland in this take.