MS-14A Gelgoog (MS-14A ゲルググ) is the final mass-produced MS produced by the Principality of Zeon during the One Year War. It was developed from the Gelgoog Early Prototype (MS-06R-3S High Mobility Type Zaku). It was designed superior - if not equal - to the RX-78 Gundam. Though the many Gelgoogs ever produced by Zeon, it was never once able to defeat Gundam, which was mainly due to the talents of the Gundam's pilot, Amuro Ray. Its design was likely to be based originally on the MS-05 Zaku I, due to the upward fin that appears on the back of both the Gelgoog and the Zaku I's head.