Annie Leonhardt's fortress is the interior of the wicked blonde-haired girl named Annie Leonhardt (Lauren Landa), the only biological daughter of the late Mr. Leonhardt. This battle stage made its first debut in Shingeki no Kyojin. This stage is also serves as Annie Leonhardt's home and hidden citadel. However, Mr. Leonhardt's life changed from bad to worse when his evik biological daughter Annie staged a coup d'etat and stole the citadel away from him. In retaliation, Mr. Leonhardt attempted to retake the citadel when his evil biological daughter Annie entered the military industry, but failed and was imprisoned by his own daughter beneath the citadel.