Argon, a Grand Moff of the Imperial military, was a male who served during the time of the Galactic Civil War. After being swindled out of 25,000 credits by the Tonnika sisters, he swore revenge and began a relentless pursuit of them throughout the galaxy, no matter their location. As part of the operation to recover the Death Star plans, Argon dispatched his agents, including Colonel Parq, to search for the droids C-3PO and R2-D2 on the planet Tatooine. During this hunt, Parq apprehended two women in Chalmun's Spaceport Cantina whom he mistook for the Tonnika sisters; however, they were actually the Mistryl Shadow Guards Shada D'ukal and Karoly D'ulin, disguised as Brea and Senni Tonnika while present on Tatooine.