Uwan (うわん Uwan) is a yōkai.
Uwan is a large human-like yōkai, with pale teal skin, wearing a pale grey loincloth held by a yellow rope as his only clothing. He has a thick neck, stubble of hair form a slight beard, strands of hair cover his chests, forearms, legs and feet. His body has a big build and is rather disproportionate, having long arms that reach his feet, his forearms are rather thick, with equally large hands and his legs are very muscular. His eyes, which are usually kept closed, have yellow sclerae,dark orange irises and black pupils and he often smiles.
He appears in episode #20 of the fifth anime adaptation, Voice From the Dark! Ghost Spot.
It is named for the distinctive sound it makes, crying out from the darkness: “Uwan!”
Uwan are occasionally encountered outside of old buildings and temples, where they like to assault lone passersby by leaping out of the shadows and shouting, “Uwan!”