Garen IV was a planet utilized as a land-based prison throughout both the Imperial and New Republic Eras. Chargutt Lo, a Gamorrean who had been found guilty of a violent crime, was incarcerated on Garen IV for a duration of 15 years. This sentence was recorded within Lo's file, which was one of many examined by Marshal Carasynthia Dune circa 9 ABY while she was looking for information about the criminal Migs Mayfeld.
In "Chapter 14: The Tragedy" of The Mandalorian, a Disney+ series created by Jon Favreau and directed by Robert Rodriguez, Garen IV appeared on a display screen; the episode was released on December 4, 2020. Within the Star Wars Legends continuity, the short story "Firepower," penned by Carolyn Golledge and featured in Star Wars Adventure Journal 8 published on November 1 1995, marked the initial reference to the planet Garen IV.