Kuo-toa, (meaning "original masters" in their native tongue) also known as gogglers and men-fish, were a debased, piscine race of warm-blooded and amphibious creatures that dwelt in the Underdark. Sinister secrets lurked below the surface of their alien minds, for the kuo-toa were fanatics plagued by mental instability that saw things others couldn't and worshiped gods that didn't exist — at least until they believed hard enough.