In the anime television series Mobile Suit Gundam (Universal Century series) universe, Zeon can refer to the Republic of Zeon, the Principality of Zeon or Neo Zeon. It is also referred to as the Duchy of Zeon or the Zeon Dukedom. Before the English translation of Japanese name to Zeon was canonized by Nippon Sunrise in the late 1990s, it was sometimes translated as Zion or Jion, with the latter being closer to actual pronunciation in Japanese. This fictional faction appeared in various plots of the meta-series, including animated series Mobile Suit Gundam, Mobile Suit Gundam 0080: War in the Pocket, Mobile Suit Gundam 0083: Stardust Memory, Mobile Suit Gundam MS IGLOO, Mobile Suit Zeta Gundam, Mobile Suit Gundam ZZ, Mobile Suit Gundam: Char's Counterattack, Mobile Suit Gundam Unicorn and many novel and manga series. The main events of the early Universal Century timeline revolves around wars between the Earth Federation and Zeon and its different splinter factions.
Read more about Zeon: Cultural Significance, Republic of Zeon, Principality of Zeon, Mars Zeon, Variations in Name