RGM-122 Javelin

The RGM-122 Javelin was the main Earth Federation Mobile Suit developed by Anaheim Electronics. The Javelin was based on the Earth-use RGM-119 Jamesgun and the early model share most parts with the Jamesgun, although the later production model which used during Zanscar Wars built with original parts completely. In addition to various thrusters that improve its performance in space, the Javelin also equipped with javelin pack backpack. The javelin pack is equipped with pair of shot lancer, inspired by similar weapon used by Crossbone Vanguard's mobile suit. The javelin pack can be change to different backpack depend on situation, notable are mega spear pack which feature pair of large anti-ship spear instead of the shot lancer. And cannon pack which allow Javelin to take role of artillery fire support unit, the RGM-122C Javelin Cannon. There are two types of cannon pack, a dual beam cannon and double 4-barrel beam cannon.

Although the Javelin is the best mass production MS available to Earth Federation, it was outclassed by newer Zanscar's MS.