Board Thread:Manga/@comment-5774380-20161108124943/@comment-25322628-20161124021445

SkeletonTitan wrote: You're probably right. Another thing, what if the Quadrupedal Titan ate Ymir to gain her shifting ability? In fact, the Quadrupedal Titan wasn't shown before Ymir disappeard.

By the way, Ymir said "it doesn't feel bad being a godess". Maybe that means she is the original titan after all? It's possible, but we won't know until much later.