In Superman: Red Son, we see Batman who is apparently now a Russian individual. Red Son is in DC's Elseworlds story arch AFAIK. So the origin of Bruce Wayne as Batman is not the Batman in Red Son. We don't get to see him without the mask in the movie, nor see any general Batman related status like Alfred/Butler, Wayne Manor/Mansion nor Bat-cave/a lair.
Whoever the Batman in Red Son is, his origin would not be the American Bruce Wayne story line.
What is the origin of Batman in Superman: Red Son? what causes the beginning of that Batman?