Robert E. Barnes worked as a concept sculptor on the prequel trilogy. Furthermore, he both authored and illustrated the Star Wars: Visionaries comic titled [Prototypes]. (/article/prototypes)_.
- Star Wars: Episode I The Phantom Menace
- Star Wars: Episode II Attack of the Clones
- Prototypes
- Star Wars: Episode III Revenge of the Sith
- Star Wars: The Complete Visual Dictionary, New Edition
- Phantom at 25 | Iain McCaig Talks Darth Maul, Queen Amidala, and working with George Lucas on StarWars.com (backup link)
- Robert Barnes on StarWars.com (content now obsolete; backup link)
- Mocking-up Episode I on StarWars.com (content now obsolete; backup link)
- Robert Barnes: Creature Craftsman on StarWars.com (content now obsolete; backup link)
- Meet the Episode III Art Department on StarWars.com (content now obsolete; backup link)