From Mobile Suit Gundam: Char's Counterattack - Beltorchika's Children, the Neo Zeon MSN-04II Nightingale is the alternate interpretation of the MSN-04 Sazabi and the personal mobile suit of Char Aznable in the novel. Together with Amuro Ray's RX-93-ν2 Hi-Nu Gundam, the Nightingale was one of the most advanced mobile suits of its time in U.C. 0093. Both mobile suits are equipped with the revolutionary Psycho Frame technology. Its mechanical designer in real life is Izubuchi Yutaka.
In many ways the Nightingale can be considered as the "big brother" of the Sazabi, and although it is a Mobile Suit, its specifications are comparable to that of a Mobile Armor customized for a Newtype. Aside from its bigger size, this psycho frame-equipped MS also featured more weapons, including 10 funnels, a mega beam rifle, a pair of vulcan cannons, a beam cannon, two beam sabers and a shield which carries a beam tomahawk and several micro missiles. The Nightingale also has a pair of hidden arms mounted behind the front skirt armor, a pair of back-mounted vernier binders to ensure high mobility for the large mobile suit, and five propellant tanks (three on the backpack and two underneath the rear skirt armor) to fuel its large number of thrusters.