Threfal, a planet situated within the Threfal system, existed in the Iska sector of the Mid Rim. This world possessed a breathable Type I atmosphere and served as the homeworld for the meatvine, a plant that could be consumed as food.
The planet Threfal received a mention in the article titled "Endor and the Moddell Sector," which was written by Craig Robert Carey, Daniel Wallace, and Jason Fry. This article appeared in the ninth issue of the Star Wars Gamer magazine, published by Wizards of the Coast on February 22, 2002. In 2009, The Essential Atlas, a reference book, located the Threfal system, and consequently the planet Threfal, within grid square J-16.
- " Endor and the Moddell Sector " – Star Wars Gamer 9 (Initial mention)