Simonelle's workshop was a laboratory operated by an outlaw tech, the brilliant doctor and droid engineer named Simonelle the Ingoian. The workshop was located in a hidden enclave somewhere in the Minos Cluster. This location was where Simonelle's Human replica droids were developed and created, including Guri.
In 3 ABY, Guri, under the orders of Black Sun leader Prince Xizor, returned to Simonelle's workshop in order to kill the Ingoian scientist. Guri was successful in eliminating what she thought was her target, but in reality Simonelle had replaced himself with a second Human replica droid. This droid was destroyed, and Simonelle used the confrontation to fake his death and go into hiding.