The MAM-07 Grublo is one of the early mobile armor designs fielded by the Principality of Zeon during the One Year War. It appears in the anime series Mobile Suit Gundam, and is piloted by Flanagan Boone.
The MAM-07 Grublo is an underwater mobile armor designed along similar lines as a submarine, but uses Zeon mobile suit technology to increase its mobility and make it a more effective anti-ship weapon. The Grublo was mainly designed for underwater combat mounting torpedo launchers for ship-to-ship or ship-to-shore assaults. For propulsion, the Grublo is equipped with thermonuclear hydrojet thrusters similar to Zeon's amphibious MS and is said to be able to circle the globe independently. One oddity in the Grublo's design is that unlike Zeon's other aquatic mobile weapons, such as the MSM-03 Gogg, it is not equipped with a mega particle cannon. A nose-mounted mega particle cannon had been planned for the mass-production units, however, the Grublo would only remain at the prototype stage.