Kalee was covered in tropical-looking foliage and beaches. Moss-covered canyons and cliffs filled the landscapes. It was apparently a harsh world, and wanting for resources. The Kaleesh housing and buildings were very temple-like. The Kaleesh were highly intelligent bipedal hunter-warriors, hunting predators such as mumuu and karabbacs to make ceremonial cloaks and war masks.
In the year 3664 BBY, Xivhkalrainik was born on Kalee. The Kaleesh had had a long history of warfare, which led to their poverty. Circa 100 BBY, the Republic persuaded them that the neighboring Bitthævrians were threatening their border so that they could unseat a regime considered unfriendly to Coruscant. The Kaleesh fought alongside the Jedi against the Bitthævrians in the ensuing Kaleesh–Bitthævrian War.
The Republic later sided with the Huks against the Kaleesh in the Huk War, defeating the Kaleesh. During the wars, the Kaleesh, led by General Grievous nearly defeated their enemy until he was incapacitated in a shuttle crash arranged by the InterGalactic Banking Clan. San Hill paid for a cybernetic suit to be built by the Geonosians for Grievous, who became leader of the Separatist military forces. In return for Grievous's services, the InterGalactic Banking Clan financed the economic recovery of Kalee.