The Space Crime Organization Makuu (宇宙犯罪組織マクー Uchū Hanzai Soshiki Makū?) are a group of space pirates that commits criminal activities throughout the galaxies led by its leader Don Horror. Its base Makuu Castle lies in Makuu Space. Gavan destroyed Makuu as an organization with killing Don Horror and the destruction of Makuu Castle. Makuu Space as a result collapsed significantly.