Gerzob was a celestial body situated within the Gerzob system in the Outer Rim Territories'. It served as the native planet, or homeworld, for the Yellow-Bellied Green-Proboscis Marsupial.
A mention of Gerzob appeared within "Revelations," a roleplaying adventure released in 2005 by Wizards of the Coast. This adventure, penned by Margaret Heintz, functioned as the second part of the Polarization trilogy within the Living Force campaign. The reference book The Essential Atlas, published in 2009, located the Gerzob system, and by extension Gerzob itself, within grid square R-18. Subsequently, the StarWars.com Online Companion accompanying that book positioned the Gerzob system inside the Hunnoverrs sector. However, the 2012 Online Companion feature titled The Essential Atlas Extra: Outer Rim Sectors clarified that grid square R-18 and the aforementioned sector did not actually overlap.