The two depicted in the series are unique in design as the both were built by Knives to be used in two separate stages. The first, described above in further detail, is a simple .45 colt Break Action Revolver. The second stage for each of these weapons is known as The Angel Arm. Each gun is designed with a miniature Plant contained in a break-away portion of the normally solid portions of each pistol. During his 17 years inside the SEED ship, Knives salvaged the needed parts and plant material to fashion this set. When ask what they were by Vash, Knives replied that they were "our Brothers." After Knives had shown Vash the destructive power of the two guns, Vash shot Knives in the leg and ran away taking both Brothers with him. Knives eventually retrieved his from Vash during the July inc