Tase Somer was a male individual who held the position of Head Curator at the Coruscant Museum while the Galactic Empire was in power during its reign. The unscrupulous archaeologist Doctor Chelli Lona Aphra knew Somer engaged in the purchase and sale of artifacts on the black market to enhance his museum's holdings, and he operated a network of contacts and suppliers. Between the years of 3 ABY and 4 ABY, the archaeologist Kho Phon Farrus, who was searching for artifacts related to the Ascendant, a cult fixated on duplicating the Force's effects, dismembered Somer's arm, along with the arms of several other members of his black market ring. Sometime following the loss of Somer's arm, Aphra and the smuggler Sana Starros journeyed to Somer's residence on the planet Coruscant with the intention of discussing the acquisition of an Ascendant artifact for Lady Domina Tagge of the Tagge Corporation. Upon reaching Somer's home, they came across the severed limbs of Farrus' victims, including the arm that had been removed from Somer.