After the AGE-2 Gundam AGE-2 Normal was heavily damaged by Sid, the Earth Federation salvaged both the AGE System Core and the AGE Device, while Bisidian members took the remains of the mobile suit, and its pilot, Asemu Asuno. The said scrap parts were taken to the Madorna Workshop to be repaired, but Asemu decided to hide his identity and became a permanent member of Bisidian. He chose to have the mobile suit reworked to hide the fact that he was still alive and the result was the Gundam AGE-2 Dark Hound.

The Dark Hound shared the same specifications as its predecessor, with the exception of the Wear System and the AGE System. Like its predecessor, it is able to transform into a high-speed fighter-like form known as Strider mode, which flies at three times the speed of its MS mode. Its transformation systems have been restored to perfection, resulting in further improved mobility. In this form, it is capable of atmospheric entry. For weapons, the Dark Hound possess a DODS Lancer, two Anchor Shots and a pair of Beam Sabers.