User blog comment:Jkphantom9/GUYS, STAY CALM.../@comment-3257939-20140602213557/@comment-186.188.108.69-20140603143150

Also, here's a fun fact: The RWBY TV Trope page describe the Team as a Four Temperament Ensemble, and at one point it also related each temperament with a classic element:

Ruby: Sanguine (Air)

Weiss: Phlematic (Water)

Blake: Melancholic (Earth)

Yang: Choleric (Fire... of course!)

Notice the order?

HSXI