The Principality of Zeon had begun developing experimental mobile armor during the early stages of the One Year War, and one of the earliest designs was the spacegoing MA-04X Zakrello. Rather than the agile and multi-role concept used in mobile suits, the Zakrello mobile armor was designed with speed and firepower in mind. It was equipped with a high-output generator to power its scattering beam cannon, and mounted large enough thrusters to give it tremendous acceleration. It also mounted a pair of pincer-like blades for high-speed, slicing melee attacks. However, what the Zakrello enjoyed in speed it lacked in agility, making it highly prone to taking fire and being unable to dodge attacks.