Vuldo, a Kalarban, engaged in illicit activities related to the construction of blasters. He compelled Q-E, 2-E, and U-E to fabricate these blasters under duress. As the droids began to express doubts about his motives, Vuldo resorted to violence, shooting U-E. Ultimately, C-3PO, R2-D2, and Nak Pitareeze apprehended him.