User blog comment:MeDeoPal/On the Origin of Titans and Shifters/@comment-66.189.57.218-20141220192239

Alright my theory is this, humanity was corrupted and screwed up before the titans even arrived. Everything was a disaster and people died in the thousands. Criminals lurking in every corner killed small children for ransom and the public was a corrupted hell. Thus, in order to restore peace, a group of government officials decided to create the titan. The titans would be humanity's common enemy and thus unite the people. This is my theory. The beast titan is simply one of the government officials who probably took an overdose of serum