Shingeki no Kyojin Season 3 Episode 9 English Subbed Episode Title:Ruler of the Walls.Episode Description:Erwin justifies his decision to not evacuate Orvud District because Titans are attracted to the density of human populations, so they can use this to their advantage by luring Rod's Titan into a trap. Erwin's plan works initially, as they manage to get Rod's titan close to the wall where the trap is set. However, the Garrison Corp's cannon barrages have little effect, and Rod's Titan eventually reaches and towers against the wall...