The MSZ-006 Zeta Gundam, designed by Kazumi Fujita, is a fictional weapon of the anime Mobile Suit Zeta Gundam from the Universal Century timeline of the Gundam metaseries. Its popularity has led to many variations, upgrades, redesigns and influenced later design works such as the Zeta Plus and the Wing Gundam. It is also the only Mobile Suit having a real, pilotable, down-scaled, 7 metre tall, hydraulicly controlled model built. The name is derived from the series' name in which the suit appears, Mobile Suit Zeta Gundam, which is the sequel of Mobile Suit Gundam. The suit however is first deployed in the middle of the story as a reinforcement. The unit was piloted by the series' main character Kamille Bidan until the end of the series. Zeta Gundam also became the beginning mobile suit of the main character Judau Ashta of the sequel Mobile Suit Gundam ZZ before he switched suit to the more powerful ZZ Gundam. The Zeta Gundam eventually sustained heavy damage and was abandoned at the conclusion of the Neo-Zeon Civil War. The unit has also appeared in most of the Super Robot Wars series, which is famous for featuring different giant robot mechas of different franchise together in one mixed story. Inside the Gundam Franchise, it has been featured in the PS1 game Gundam Battle Assault (Gundam: The Battle Master 2 in Japan), the PS2 Game Mobile Suit Gundam Z: AEUG vs. Titans and the PSP Game Mobile Suit Gundam: Battle Royale. It is also one of the featured units in the March 2007 release of the PS3 and Xbox 360 game 'Dynasty Warriors: Gundam, a spinoff series of the Koei game Dynasty Warriors. Three variations are also featured in Gundam Evolve 9. In the SD Gundam manga Double Zeta Kun kokoniari(ダブルゼ－タくんここにあリ, Little Double Zeta is here), Zeta Chan is the main female character, a girl version of Zeta with only the V antenna and the name recognizable.

Source: Wikipedia