“Narratively this could fit extremely well,” Little_Assistant_247 wrote about Ultraman being Java, Simon Stagg’s henchman. “Java is supposed to be a Neanderthal, and we do get a glimpse of STAGG ...
I’m sure by now you’ve figured out who Ultraman is. He’s a clone of Superman, made by Lex Luthor after combing the sites of Superman’s battle to find his DNA. He’s basically Bizarro for the DCU.