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

[Q]: I know that there were many, many, many changes made from the book Ready Player One to the movie adaption. But the most puzzling to me is why the character called "Shoto" in the book was renamed "Sho" for the movie?  They kept his partner's name, Daito, the same. And since Daito and Shoto are both classifications of Japanese swords, it seems it would make more sense (especially for Japanese audiences) to keep the name as "Shoto".  Any idea why the filmmakers made this seemingly capricious change?
[A]: Why was the character Shoto in the book renamed to Sho for the movie?


[Q]: At 1:27 of this clip from Pearl Harbor (2001), Japanese bombers are flying over teenagers somewhere in Hawaii playing baseball.  The Japanese machine gunner then gestures his arms vertically, but why? He doesn't appear to be waving as a greeting.
[A]: What's this Japanese bomber machine gunner gesturing with his arms?


[Q]: 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?
[A]:
What were all the fighters in previous Age of Heroes?