Char's MS-06S Zaku II is a customized version of the standard MS-06S Zaku II Commander Type (an overall improved MS-06F Zaku II) painted in his personal red colors. Being a commander's unit, a horn-like decoration was also attached to its head. Despite the high risks, Char personally ordered the removal of its limiters, allowing it to use its thrusters to the maximum limit. The hit-and-run tactics enabled by the resulting high thrust, and the impression its distinctive colors made on the battlefield, led to Char's nick name, "Red Comet". After the Clash of Loum, Vice Admiral Dozle secretly ordered Char to command the Falmer, a custom Musai-class battleship, and unit emblems and victory markings were applied to his MS-06S.These included bright white lines indicating it as the commander's unit, the unit number "A12" and emblems of the Falmer.
For the upcoming battle of Loum, Lt. Char Aznable would be among the special aces allowed to customize their personal units. Char emphasized the unit's speed and promptly had all limiters on his unit removed after complaining of only getting a substandard performance with them.
Before the ambush on Revil's fleet, Char took his Zaku to a visit to Side 5's Texas Colony, where he had grown up, and later kept Zeon forces from bombarding the colony. Char would score first blood against Revil's fleet, moving at thrice the regular speed for a normal Zaku. Aside from his Zaku's speed, Char would also single-handedly destroy five Magellan-class ships, one of which with only a single bazooka shot.