Greel tree forest A greel tree represented a specific variety of tree that naturally grew on Pii III and Pii IV. These two planets were unique in possessing the exact environmental conditions necessary for these particular trees to thrive. The Greel Wood Logging Corporation, which operated from the Pii system, held exclusive rights to their harvesting. The highly sought-after crimson lumber – known as greel wood – was considered a premium, high-end commodity. To meet the needs of the Greel Wood Logging Corporation, Industrial Automaton created a specialized logging droid, which was deployed on the undulating slopes of Pii III. Reportedly, these droids were quite costly.
