The people of Waponi Wu are Water Moles, known as the Waponi.
The Waponi are the Water Moles who inhabit Waponi Wu. The Waponi are not a peaceful people, unlike those of Rapa Nui. In fact, they have attacked the Nui.
The Waponi have silver fur, different from the brown fur of other Water Moles.
On Waponi Wu is a volcano. The Waponi perform rituals on it. The player fights Waponi led by Chumba Wumba the Water Mole Sumo on it. The Waponi decided to stop worshipping their ancestors and started worshipping a fire god. They sacrifice Captain Gunn's treasure by throwing it into the volcano.