Parasites were lifeforms that attached themselves and leeched off another to survive. Rock warts, phidna and the brain worms of Geonosis were examples of parasites. Mynocks could survive as parasites inside an exogorth for years before being digested.
- Star Wars: The Clone Wars – "Legacy of Terror"
- Star Wars: The Clone Wars – "Brain Invaders"
- Star Wars: The Clone Wars – "Orders" (Mentioned only)
- Rogue One: A Star Wars Story novel
- Doctor Aphra 7
- Star Wars: Episode V The Empire Strikes Back (First appearance)
- Aftermath: Life Debt (Mentioned only)
- Aftermath: Empire's End (Mentioned only)