Fan Casting Attack on Titan (Shingeki no Kyojin)

Attack on Titan (Japanese: 進撃の巨人) is a Japanese manga series written and illustrated by Hajime Isayama. It is set in a world where humanity is forced to live in cities surrounded by three enormous walls that protect them from gigantic man-eating humanoids referred to as Titans; the story follows Eren Jaeger, who vows to exterminate the Titans after they bring about the destruction of his hometown and the death of his mother.