Gren () is the wood planet, which is mostly covered with jungle terrain. The planet is populated with Felin and Salamander people, and the space pirate base is also located here. The giant tree Yggsalad soars above the deepest parts of the jungle. The salamanders used to live in Yggsalad, but the pirates evicted them five years ago. The heroes obtained the Wood Millennium Gummy here, after a Felin named Semolina sacrificed herself to the anthropophagus, a man-eating flower within Yggsalad. The planet was at one point set on fire.