Wilpiet, a planet, existed inside the Wilpiet system. This system was situated within the Cademimu sector, which itself was part of the New Territories region of the Outer Rim Territories. During the era of the Galactic Civil War, the Rebel Alliance ran a supply base on this world. A crew of Alliance members using the Simiyiar-class light freighter called Waterspire worked around Wilpiet. Sometime before 2 ABY by under two months, the Kerestian bounty hunter named Milacass absconded with the Waterspire from the Wilpiet base, leading to her being sought after for theft and damage to Alliance resources.
Wilpiet initially appeared inside Alliance Intelligence Reports, a resource released in 1995 for Star Wars: The Roleplaying Game by West End Games. Later, the 2009 book titled The Essential Atlas located the Wilpiet system, and consequently the planet Wilpiet, at map coordinate M-6.