Board Thread:Theories/@comment-27938131-20160922094959/@comment-29958651-20160925172139

Weeell, that's very difficult to say. Tons of good ideas were posted by AoT Wiki users, the one I, personally, liked the most was posted by Dalmatia and it focused on Walls being on a giant island inhabited by Titans. As for the origins of the Titans, I would support the idea of genetic experiments done by government in order to create a perfect soldier (something similar was used in One Piece). The whole project was messed up, so they choose an island where to isolate the Titans. But you know Isayama - you can expect whatever you want, he still have a plenty of surprises to introduce :-)