<P> It was then that Eren learns he possess a power that the enemy Titan Shifters seek called `` The Coordinate '' , subconsciously directing a group to kill and devour the Titan that killed his mother and then has them attack Reiner and Bertolt so he and his friends can fall back . After being rescued , Eren is sent with his friends to an isolated village while preparations are made for a campaign to retake Wall Maria for good , by making use of his newfound power . But Eren is then captured by the royal family 's patriarch Rod Reiss , who reveals the `` Coordinate '' was originally in his family for years since their founding ancestor created the walls until it was stolen . Eren also learns that his transformation into a Titan was caused by Grisha , another Titan Shifter , whom he unconsciously devoured to inherit `` The Coordinate '' which Grisha obtained from eating Historia 's half sister Frieda Reiss . Eren realizes by then that Rod Reiss intends to restore his family by having Historia become a Titan and eat Eren , accepting his fate out of guilt for the people he failed to save as he asks Historia to save humanity in his place . However , Eren finds Historia refusing to aid her father as she frees him as Rod becomes an Abnormal Titan while Misaka , Levi , and Jean arrive . Eren ingests a liquid labeled `` Armor '' that bestows him a new power to harden his Titan form , using it to save himself and his friends from being crushed by a collapsing ceiling before he and the Survey Corps head to the Orvud district where they confront and kill Rod . </P>
<P> It was then that Eren learns he possess a power that the enemy Titan Shifters seek called `` The Coordinate '' , subconsciously directing a group to kill and devour the Titan that killed his mother and then has them attack Reiner and Bertolt so he and his friends can fall back . After being rescued , Eren is sent with his friends to an isolated village while preparations are made for a campaign to retake Wall Maria for good , by making use of his newfound power . But Eren is then captured by the royal family 's patriarch Rod Reiss , who reveals the `` Coordinate '' was originally in his family for years since their founding ancestor created the walls until it was stolen . Eren also learns that his transformation into a Titan was caused by Grisha , another Titan Shifter , whom he unconsciously devoured to inherit `` The Coordinate '' which Grisha obtained from eating Historia 's half sister Frieda Reiss . Eren realizes by then that Rod Reiss intends to restore his family by having Historia become a Titan and eat Eren , accepting his fate out of guilt for the people he failed to save as he asks Historia to save humanity in his place . However , Eren finds Historia refusing to aid her father as she frees him as Rod becomes an Abnormal Titan while Misaka , Levi , and Jean arrive . Eren ingests a liquid labeled `` Armor '' that bestows him a new power to harden his Titan form , using it to save himself and his friends from being crushed by a collapsing ceiling before he and the Survey Corps head to the Orvud district where they confront and kill Rod . </P>
who created the walls in attack on titan
who created the walls in attack on titan
the royal family 's patriarch Rod Reiss , who reveals the `` Coordinate '' was originally in his family for years since their founding ancestor created the walls
the royal family 's patriarch Rod Reiss , who reveals the `` Coordinate '' was originally in his family for years since their founding ancestor created the walls