- "One doesn't ally with worms against a krayt dragon. Can you show me you aren't a worm?"
"Do you see me crawling?"
- ―Deathstick and a smuggler
A worm was any of various elongated, soft-bodied animals that lacked limbs. On Dagobah, there were worms that burrowed into and help aerate soil. Those worms enjoyed soggy earth, which prompted them to surface after rain. On Geonosis, there existed a species of parasitic green worms that could control any organic body, alive or dead, by entering through the nasal cavity. Another parasite, the conduit worm, was known to feed off the electrical wiring of starships. The gargantuan joopa creatures from Seelos were also a type of worm.
- Star Wars: Absolutely Everything You Need to Know
- Star Wars: The Force Awakens: The Visual Dictionary
- Rey's Survival Guide
- Star Wars: Complete Locations
- Star Wars: The Visual Encyclopedia
- Star Wars: Absolutely Everything You Need to Know, Updated and Expanded
- Forces of Destiny: Tales of Hope & Courage
- Star Wars Helmet Collection 31 (Databank A-Z: Kaminoans–King Katuunko)
- Star Wars Helmet Collection 36 (Weapons & Uniforms: Jabba's Courtiers)
- Star Wars Helmet Collection 41 (Databank A-Z: 'Occupier' Tank–Oola)
- Solo: A Star Wars Story The Official Guide
- Star Wars Helmet Collection 60 (Highlights of the Saga: The Second Battle of Geonosis)
- Star Wars: Creatures Big & Small
- "Anakin Skywalker" – Star Wars Encyclopedia