A GN Drive Tau-equipped mobile suit stored at the top of the huge mobile armor Alvatore, the Alvaaron is actually the main body, with the mobile armor being merely its enhancement parts. The Alvaaron is in a seated position when stored on the Alvatore, with its four limbs pointing forward and a GN Beam Rifle held in each hand. In this state, the Alvaaron's lower body is surrounded by the Alvatore's parts, while its upper body is mostly covered by its back-mounted wings, except for its head and part of its GN Beam Rifles' barrels, integrating the mobile suit with the rest of the mobile armor. As the Alvaaron is not completely stored within the Alvatore, it can immediately separate from the mobile armor in an emergency to operate as an independent unit.

The Alvaaron was developed according to the instructions of its pilot, Alejandro Corner, and was based off the data of the 1 Gundam. It was also thought to have incorporated feedback from the Gundam Thrones' and the GN-X's data, but aside from having the same GN Drive Tau, the Alvaaron's design had little in common with these machines.