PK-series worker droids were a model of labor droid used by the Trade Federation. During the Invasion of Naboo, a number of PK units were stationed on board the Lucrehulk-class LH-3210 cargo freighter Saak'ak.
- Star Wars: Episode I The Phantom Menace (First appearance)
- Star Wars Special: C-3PO 1: The Phantom Limb
- Star Wars: Absolutely Everything You Need to Know (First identified as PK-series worker droid)
- Star Wars: The Visual Encyclopedia (Picture only)
- Star Wars: Absolutely Everything You Need to Know, Updated and Expanded