Gromas was a gas giant planet in the Gromas system, part of the Perkell sector of the Mid Rim. Gromas was only notable for its 32 multicolored moons, including the "Blood Moon," Gromas 16. Its moons were the primary source of phrik. And-Yees, a Gran assassin, was known to have visited Gromas before being captured by Jango Fett at Outland Transit Station.
At some point, the planet was visited by Anakin Skywalker, who commented on the source of phrik in his copy of The Jedi Path: A Manual for Students of the Force. He believed he should inform Supreme Chancellor Palpatine of the potential danger.
- Star Wars: Bounty Hunter (First mentioned)
- "Revving Up the 'Jedi Engine'"—Star Wars Galaxy Magazine 1
- The Essential Atlas
- The Jedi Path: A Manual for Students of the Force
- Star Wars: Edge of the Empire Core Rulebook