In the last weeks of the One Year War, the Principality of Zeon developed the mobile armor MA-06 Val-Walo, based on the MA-05 Bigro. Whereas the Bigro was designed for anti-ship assaults, the Val-Walo was intended to serve as both an anti-ship unit and as a close combat unit against mobile suits. Sporting a powerful mega particle cannon, anti-air beam guns and vulcan guns, and large claw arms, it was well suited to both these mission roles. Another weapon in its anti-MS arsenal was its trio of plasma leaders, an improvement on the Adzam leaders used in the MAX-03 Adzam mobile armor. These weapons, when deployed around a target, opened up and emitted powerful electrically-charged plasma, disrupting and overloading a mobile suit's controls and electronics. Due to its late entry into the war, however, only a handful were constructed. One known unit survived the war and was repaired by crippled Zeon pilot Kelley Layzner in his junkyard in the depths of the Lunar city Von Braun.