The MSN-04 II Nightingale (MSN-04II ナイチンゲール?) is a mobile suit introduced in Mobile Suit Gundam: Char's Counterattack - Beltorchika's Children. It was piloted by Char Aznable during Char's Rebellion .

The MSN-04 II Nightingale was developed exclusively for Char Aznable, the leader of Neo Zeon. its most prominent feature was the incorporation of a Psycho-Frame. As a result, the Nightingale was completed as a Mobile Sit (MS) with capabilities akin to a Mobile Armor (MA). The Nightingale was an MS with exceptional abilities and its silhouette greatly deviated from a human design, with overhanging binders on both shoulders, a large rear armor piece that extended backwards, and front armor as large as the legs. Despite its unconventional design., mobility devices placed on the shoulders and rear armor enabled the MS to gain high mobility and operability, and the five propellant tanks allowed for long combat operations. It was armed with a long-range, high-0power Large Mega Beam File, a Beam Tomahawk equipped with three devices, and 10 funnels. This armament configuration enabled the MS to gain combat abilities that could flexibly adapt to firefights, melee combat, and perform all-range attacks. The Nightingale was deployed during Char's Rebellion and overwhelmed Amuro Ray's RGZ-91 Re-GZ. It was as powerful as the RX-93-ν2 Hi-ν Gundam during the battle over Axis .