The Human male Deacon Eso was an engineer in the Alliance to Restore the Republic during the Galactic Civil War, a conflict between the Alliance and the Galactic Empire. At some point during the conflict, Eso was among the engineers sent to the planet Corellia to ensure and assist in the production of the Alliance's starships.
By 0 ABY, Eso had attained the rank of captain. Immediately preceding 0 ABY, the Battle of Yavin occurred, during which the Alliance destroyed the Imperial DS-1 Orbital Battle Station superweapon over the moon Yavin 4. Following the battle, the Alliance held a ceremony in the Grand Audience Chamber of the Great Temple, their headquarters on Yavin 4. Eso was present during the ceremony, which was held in honor of the Heroes of Yavin: Luke Skywalker, Han Solo, and Chewbacca.
Deacon Eso was first seen as an unnamed Rebel extra in the ending scene of the 1977 original trilogy film, Star Wars: Episode IV A New Hope. In June 2012, he was given a name in the Rogues Gallery: Celebrating a Rebel Victory! feature of the 133rd issue of the Star Wars Insider magazine.
- The Art of Star Wars Episode IV: A New Hope
- Star Wars: The Annotated Screenplays
- Star Wars: Behind the Magic
- Star Wars Customizable Card Game — Special Edition Limited
- Rebellion Era Sourcebook
- The Official Star Wars Fact File1
- Empire of Dreams: The Story of the Star Wars Trilogy
- The Complete Star Wars Encyclopedia
- "Rogues Gallery: Celebrating a Rebel Victory!" — Star Wars Insider 133