Board Thread:Speculation House/@comment-1996340-20130815235115/@comment-10380701-20130929063704

White Cloak theories are something I usually don't play with, but I found a plausible explanation for it.

White Cloak is a scarecrow.

It was placed there by Ruby to avert any nearby flying Grimm like the Nevermore from fucking up the Cliffside Altar.

Ruby made the White Cloak from the many spare clothes of Weiss. This is why Weiss looks serious in the intro.