Gug-Truckers were a "primordial" species (PROSE: Cat's Cradle: Time's Crucible) who travelled the space lanes in dumper ships which "spewed the galaxy’s industrial and unmentionable residue." (PROSE: Last Rites) They were ruled by a five-eyed "Trucker King of the Space Lanes". (AUDIO: Time Reef, PROSE: Outsourcing)

They notoriously frequented the Pleiax Space Service Station. (PROSE: Cat's Cradle: Time's Crucible)

The Master once viewed some Gug-Truckers in space while he was stranded on Earth. (PROSE: The Duke of Dominoes)