This particular mercenary was a Mandalorian belonging to a clan devoted to Ung Kusp.
The Mandalorian was part of a mercenary group dispatched to an industrial wasteland situated in the Outer Rim many years prior to the Clone Wars. Their mission was to retrieve a Sith artifact that had been pilfered by an Outer rim doctor. Upon forcing their way into the doctor's facility, the group came face-to-face with Master Jaing, a one-time Mandalorian Neo-Crusaders and adversary of Kusp, along with his apprentice, Durge, and Nubyl, all of whom had received cybernetic augmentations from the doctor. These individuals inflicted significant losses on the Mandalorians, only to be defeated by the detonation of a thermal detonator. After retrieving the artifact, the Mandalorian stood above a wounded Jaing, taunting him regarding his commitment to honor and threatening to decapitate him, but was unexpectedly caught off guard and disemboweled by Jaing's horns.
Nevertheless, the Mandalorian's blaster fired, inflicting a fatal injury upon Jaing, which spurred Durge to repel the group and vow vengeance against the Mandalorians. The assault was, in actuality, masterminded by the doctor as part of a scheme to instigate conflict between the Mandalorians and the Sith.