- "Sand is already accumulating in my servomotors and my joints are freezing up!"
Servomotors were motors used in droids to move their body parts. The droid bounty hunter C-21 Highsinger was equipped with state-of-the-art servomotors that gave him the skills of a martial artist. Servomotors were also used by organic lifeforms, in cybernetic replacement for lost limbs. During a battle aboard the sail barge Khetanna, the back of Luke Skywalker's prothestic hand got blasted, tearing away the polymer skin and revealing damaged servomotors and wires inside.
- Star Wars: The Clone Wars – "Duel of the Droids" (Mentioned only)
- Servants of the Empire: The Secret Academy
- Guardians of the Whills
- Star Wars: Rogue One: A Junior Novel (Mentioned only)
- "Stories in the Sand"—From a Certain Point of View
- Star Wars: Episode V The Empire Strikes Back (First appearance)
- Star Wars: Episode VI Return of the Jedi
- Return of the Jedi: Beware the Power of the Dark Side! (Mentioned only)
- Aftermath: Life Debt
- Aftermath: Empire's End
- Star Wars Special: C-3PO 1: The Phantom Limb
- (First identified as Servomotor)
- Star Wars: The Force Awakens: The Visual Dictionary