About Nova’s lost memories
I have three theories about how/why Nova now has amnesia. All of them have something to do with head trauma since he was complaining about his head hurting as well.
It’s because of the black hole going off in his head. This is probably the least likely one, seeing how he seemed fine right after. But I think it is still a possibility, with how crazy that entire ordeal was it’s hard to tell exactly what was going on.
Luluco’s final attack took or damaged them. Nova told her to use him as the last bullet when she needed ammo. Furthermore, when said bullet is forming, we see what looks like a film with memories of Luluco and Nova’s time together in it.
Panty’s gunshot hit him. That shot is what made the hole he fell through in the first place; we also know that it has some special/magical properties. It should be somehow possible that the shot hit him as well, but only damaged his memories.
Whatever the reason really is, I’m interested to see where they take this.