The MWS-19051G D Gundam First is a custom type mobile worker built by Darry Neil Guns, a fan of the legendary RX-78-2 Gundam, that appears in the manga Under the Gundam: Double-Fake.
A custom mobile worker created by Darry Neil Guns with support from the Monotone Mouse company using mobile suit junk parts. Its resemblance to the legendary Gundam is intentional. Its movable frame and generator were obtained from MS used in the First Neo Zeon War. It carries no offensive weaponry aside from a beam shotgun.