Board Thread:Theories/@comment-17499145-20170509021147/@comment-25933906-20170509185913

I hadn't think about that. That is a really good theory. However, in the end I do not believe it is true because of your second plothole. The power of the Titans is becoming less usefull as time passes, and combining all powers into one single Titan would be too risky if the enemy manages to kill him somehow. Although Titans are still very fearsome, even the Armored Titan was almost destroyed by state of the art cannons (I don't think Zeke, or any other Titan, would have survived if Reiner had not stepped in)

If we compare the technological level seen in Mare with the one of the real world, it is not mad to expect the invention of weapons of mass destruction in around 50 years into the future, maybe even less if periods of war are prolongued too much. And, for now, the only think that can stop a nuclear assault would be controlling the mind of the soldier responsible of its launch with the Coordinate. If we discard that option, it is impossible for a Titan as we know it to survive a nuclear blast.

''Why am I talking about nuclear weapons in Attack on Titan? Have I gone mad?''

However, this brings another very important question: who is the 9th Titan? If I'm not mistaken, we have Eren (2 inside him), Armin, Annie, Reiner, Zeke, Galliard and Pieck. I actually though Pieck was the 9th Titan, but that is not possible if Ymir and Galliard are the same. Has Isayama forgotten about the other one?