RAG-79 Aqua GM

The Aqua GM is an Earth Federation Mobile suit from the Universal Century, first appear in Kunio Okawara's M-MSV series. The Aqua GM eventually got redesign as Hajime Katoki as part of Harmony of Gundam.

As name implied, RAG-79 Aqua GM is aquatic mobile suit based on the RGM-79 GM developed to oppose Principality of Zeon's amphibious mobile suits. With rush developement, it suffer problem of air tightness and pressure resistance. Only small number of Aqua GM produced during events of One Year War, not enough to counter Zeon amphibious mobile suits effectively.

However, the Aqua GM continue to serve in Earth Federation army, as number of them were deployed during event of Mobile Suit Gundam UC. Nevertheless, the outdated Aqua GM perform poorly against Neo Zeon's AMS-129M Zee Zulu and AMA-X7 Shamblo Mobile armor.

Among the handful units of Aqua GM are redesigned unit for ace pilots. These modified units has the head resemble the famous RX-78-2 Gundam and was called Waterproof Gundam or Gundiver. Armed with explosive harpoon gun and underwater type beam rifle, it has much more combat ability compare to the Aqua GM. However, information including its overall effectiveness during the war remains unknown.