The fourth wall is a dimension that seperates reality and fiction. In cartoons, comic books and in theaters, when a character faces and talks to the audience, or makes a reference that explicitly shows the character's awareness that he/she is in a show, this is called breaking the fourth wall. in Legendz (anime) this happened several times, the fourth wall is often broken usually by Shu, Meg or Mac.

One notable example of breaking the fourth wall in the anime is in Episode 34, where Shiron and Shu discuss about making a manga/anime about Legendz.