The AMX-004 Qubeley Mk-II is the successor to the AMX-004 Qubeley featured in Mobile Suit Gundam ZZ. At least two units were built, piloted by Elpeo Ple and Ple Two respectively.
In terms of technology and performance, the two Qubeley Mk-II units were virtually identical to the original Qubeley, but they've been detuned and updated with mass production in mind. The other noticeable difference between the two Qubeley Mk-II's is the different color schemes. The first unit, AMX-004-2 Qubeley Mk-II, featured a dark purple color scheme and a hilted beam saber. The second unit, AMX-004-3 Qubeley Mk-II, had a red-and-yellow paint scheme.
The AMX-004-2 was finally defeated during an atmospheric entry battle against the Zeta Gundam piloted by Judau. Ple then defected to the AEUG to join Judau. Later on in the war, Ple sacrificed herself and her Qubeley Mk-II to protect Judau against the threat of her own "blood" - a powerful Newtype clone named Ple Two.