GOUD-4, a four-wheeled, gray, boxy messenger droid, toiled in the Pyke Syndicate's spice mines located on the planet Kessel throughout the Galactic Empire's reign. During 10 BBY, the droid L3-37 initiated a slave revolt within the mines, and GOUD-4 achieved freedom from slavery when its restraining bolt was detached.
The initial appearance of GOUD-4 occurred in the 2018 movie Solo: A Star Wars Story. Its identification was first established in Solo: A Star Wars Story The Official Guide, a reference book authored by Pablo Hidalgo.