The Sprizen sector first appeared in The Keeper's World, a serialized Star Wars Legends comic story published through nine issue of Marvel Comics' magazine Pizzazz from October 1977 to June 1978. It was first identified in The Essential Atlas Online Companion, a series of articles on StarWars.com published in the wake of the release of the Star Wars Legends reference book The Essential Atlas by its authors Jason Fry and Daniel Wallace. The Sprizen sector became canon when it appeared in "A Sunny Day in the Void," the eleventh episode of the canon animated series Star Wars: The Clone Wars fifth season. Its name was made canon by Ultimate Star Wars, a reference book co-written by Patricia Barr, Adam Bray, Daniel Wallace, and Ryder Windham that was released on April 28, 2015.
The Sprizen sector first appeared in The Keeper's World, a serialized Star Wars Legends comic story published through nine issue of Marvel Comics' magazine Pizzazz from October 1977 to June 1978. It was first identified in The Essential Atlas Online Companion, a series of articles on StarWars.com published in the wake of the release of the Star Wars Legends reference book The Essential Atlas by its authors Jason Fry and Daniel Wallace. The Sprizen sector became canon when it appeared in "A Sunny Day in the Void," the eleventh episode of the canon animated series Star Wars: The Clone Wars fifth season. Its name was made canon by Ultimate Star Wars, a reference book co-written by Patricia Barr, Adam Bray, Daniel Wallace, and Ryder Windham that was released on April 28, 2015.