The VF-171 Nightmare Plus is a general-purpose variable fighter featured in the anime series Macross Frontier. As the main mass-produced fighter of the New United Nations Spacy, it serves as the backbone of the Frontier fleet's defense. Capable of transforming between fighter, GERWALK, and Battroid modes, the VF-171 is piloted by regular military personnel and sometimes by main characters. Its design and versatility reflect the technological advancements and strategic needs of humanity in the fight against alien threats.