Board Thread:Manga/@comment-27321453-20200408113657/@comment-36307699-20200607224457

Abdou250 wrote: I have a theory : the real villain is possibly the Devil of All Earth (Yelena),remember that it's pretty clear that she have a  VERY dark side: probably she gave Ymir Fritz the power of Titans in order to ensure that humans kill each others and ensure that chaos persistes, and as Pixis noted,Eren started making more inauthorized actions after his meeting with her, he claims that he is acting on his own will,but no one knows what happened in that meeting,in the same time,her last sentence in the chapter "You see Captain,you just can't take violence for humans" is maybe foreshadowing her real identity,i know that theory is pretty unconvincing,however,she is the most suscpicous character in the whole serie right now,and just like TKGriffiths mentionned,it was pretty odd that Grisha,who once prioritized Eldia on his own son's life and even gave the founder and the attack power immediately after urging Zeke to stop Eren the day before,i don't know her motives,but she is probabely the "final enemy" Interesting theory there. It can be a possibility that Yelena is this 'Devil of the Earth', or somehow being processed by one. But, to me, I think that she is fanatical in her beliefs about Zeke and Eren are gods.

However, keep that theory, you could be onto something here.