Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

In Justice League, we got to know that Steppenwolf already tried his plan in the past; and the combined power of Amazons, Atlanteans and humans defeated them. But there were others involved too, some major DC characters, one Green Lantern (not sure which one), Zeus and someone with fire arrows and a few more.   So who were these heroes with powers? Are they some DC comics characters? I can identify Zeus but not the rest.     Who was the Green Lantern, that died, in that fight?
What were all the fighters in previous Age of Heroes?

In Spider-Man: Into the Spider-Verse, we learn that Kingpin wants to find a replacement for his wife Vanessa and son Richard by using their DNA in the machine that opens holes into other universes. (He uses a hair from a comb that gets put into the machine.)  But when Peter Parker as Spider-Man is fighting during the machine power up his head is pushed into the beam, which I assume was the reason why other spideys were pulled here because they share the same (close enough) DNA. Including Peni Parker (which could be a distant future relative in her universe, and even Spider-Ham (Peter Porker, which I'll accept as being close enough in his animal universe).  But as far as Gwen, Spider-Woman, how was she pulled into Mile's universe?  We learn that her Peter Parker was killed long before, so why did a portal/hole open up near her? When she would not share any DNA with Peter at all?  It can't just be the randomness we see from other universes, because we would have to assume there would be other (normal) people pulled in as well, not just spideys.  Maybe I missed something, but it just seems like they glossed over a valid reason.
How was Gwen pulled into Miles's universe?

In Star Wars movies, Jedi often kill their opponent (for example, Obi-Wan kills Darth Maul in the first movie and again Obi-Wan, at the end of the third movie, leaves Anakin dismembered and on fire, thinking he is going to die), but when the Chancellor orders Anakin to kill Dooku, he says:    I shouldn't. This is not the Jedi way.   So I wonder, can Jedi kill?   Or is it a mere plot device to make the fall and the internal struggle of Anakin more romantic.

In Star Wars, can a Jedi kill?