Emperor ZU Zanbajir: the emperor of Boazan Empire. He's the uncle of Prince Heinell and cousin of La Gour. He got his throne after leaking the news that La Gour’s horns were fake. He sent Heinell to Earth with task to conquer the Earth, but he actually wanted to kill Heinell because Heinell was the descendant of the real Boazan king.
DO Zuuru (in English version: Zuhl): One of the Boazanian Officers who assisted Heinell. He had only one horn on his forehead. He was in charge of making battle strategy and designing robots. One of his magnificent idea was X-raying Voltes V to figure out its energy source. He was executed after doing treason against Heinell.
Duke Zaki: The Emperor's hatchet man. He was sent to Prince Heinell to evaluate the progress of Earth invasion. Later he told Zuuru that his actual mission is to eliminate Heinell. He forced Heinell to pilot the beast robot Gargo himself and hinted the Voltes team of Gargo's weak spot. But Kazarin managed to intercept this conspiracy.
General DO Bergan (in English version: General Ozlack): Boazanian general who was sent to assist Heinell. He wore strong blue armor suit made from Maxingal metal with V-shaped metal horn on his helmet.
General Gururu (in English version: Baron Zander): Boazanian general who was sent to Earth to kidnap La Gour and to remove Heinell from his position as Earth Invasion Commander. He revealed to Voltes a way into Heinell’s undersgound lair.
Rosalia: the Boazanian wife of La Gour (Dr. GOU Kentarou). When La Gour was jailed, she was pregnant. She gave birth to Heinell and died not long after that, leaving little Heinell as an orphan.
General DANGE (in English version: General Watson): a Boazanian nobleman who cut his own horns and followed La Gour to Earth. He was the pilot of the red Mechanical Eagle aircraft that helped Voltes V to perform Choudenji Ball and later implanted the ultra magucon device on Voltes' back. He was the one who told the Voltes V team about the history of La Gour.
General DOIR (in English version: Commander Garth): close friend of La Gour. He and La Gour run the secret rebel headquarters in Alpen mountain where Solar Bird was manufactured. Later after the headquarters was destroyed and La Gour kidnapped, he commanded Solar Bird to dock with Big Falcon and take Voltes V team to planet Boazan.
