The show also received acclaim for its visual appeal. In the 34th Annie Awards, the show was nominated for and won the "Best Character Animation in a Television Production" award, for Jae-Myung Yu's animation in "The Blind Bandit", and the "Best Directing in an Animated Television Production" award, for the episode "The Drill". In 2007, the show was nominated for "Outstanding Animated Program" in the 2007 Emmy Awards for the "City of Walls and Secrets" episode, though it did not win. However, the show did win the "Outstanding Individual Achievement in Animation" award for Sang-Jin Kim's animation in the "Lake Laogai" episode.