 The Survey Corps , losing all will to follow the current government , stage a successful rebellion to overthrow the monarchy , culminating with the death of Rod by the hands of his own daughter , who becomes the new queen . It is then revealed that the Reiss Family was responsible for the creation of the walls 100 years ago using the Coordinate , which was stolen by Eren 's father Grisha , who then transferred it to Eren 's body by turning him into a Titan before allowing his son to devour him . Eren also obtains a new power that allows him to create massive and permanent structures that the Survey Corps intend to use in order to seal the breach in Shinganshina and reclaim Wall Maria . 
