Board Thread:Speculation House/@comment-25574297-20141024020130/@comment-1838842-20141101082326

Here's my theory on who she is. Over the past, we've seen that Ozpin seems to know more than he actually lets on, meaning I feel his special trait is time manipulation.

In the future, everything is fucked up because the Grim succeeded in taking over, Cinder and the others were victorious. Ozpin was able to give time manipulation to Ruby at the cost of her speed, letting her go through those portals to the past.

Weiss was killed in the battle which is why she uses so much dust, in rememberance of Weiss. Due to being related to Yang, she's now constantly angered by the death of Yang who died to the hands of the grim along with Weiss, so she always has red eyes. Yang's eyes become red when pissed, so Ruby's are now constantly red. The mask was Blake's. The mask is clearly white fang and grim-like, so my thoughts are that Blake rejoined the white fang and Ruby had to kill Blake and took the mask as a memory of her fallen friend. When we see her face at the end of episode 12, if you look close enough, she shares a facial structure closer to Ruby herself than the others, not to mention the black hair and all red clothing that seems to be a similar run off of Ruby's own clothing.

So tl;dr on my crack theory: Ozpin gave Ruby time manipulation to go back in time and stop the grim and the future they came to know from ever occuring.