Board Thread:Theories/@comment-1159059-20180330160800/@comment-1327106-20180331005929

It'd break some rules, yes, and this isn't the first theory I jumped at. My initial assumption was that the Wall Titans are transformed Subjects of Ymir (because what else would they be?), but after reading Willy's story in the recent chapters, he uses the term "created" to refer to the Wall Titans rather than "transformed" or "turned into" and nobody else uses "created" when turning people into Titans. The word choice stuck out at me and I wondered if he says "created" because they are fundamentally different from other Titans.

I could be wrong, but it's also possible that we still do not know the whole story behind the creation of the walled country.