User blog comment:TheNewProtagonist/Dust is actually kinda dumb./@comment-1538219-20130814034133/@comment-4773581-20130814040851

As someone who knows his manga as well, I would like to remind you that several series, usually long-running popular ones, provide supplementary material that contains information on either the characters or the world the series takes place in. Usually in the form of art books with descriptions or notations of the art. And they aren't webserieses...webserii...whatever.

Point is that it's entirely possible for the production team of RWBY to release some sort of material outside of the show itself that explains stuff about various bits of the RWBY world. Like Weiss' twitter. A tidbit here and there for a long time goes a surprisingly long way.