"In Japanese mythology, a Kappa is a water creature with a hollow on the top of its head filled with water. It was said that the water was the source of its power, and it could easily be defeated by tricking it to bow and causing the water to fall out of its hollow."@en . . . . "Kappa Akuso"@en . . . "In Japanese mythology, a Kappa is a water creature with a hollow on the top of its head filled with water. It was said that the water was the source of its power, and it could easily be defeated by tricking it to bow and causing the water to fall out of its hollow. Kappa (uppercase \u039A, lowercase \u03BA or \u03F0; Greek: \u039A\u03AC\u03C0\u03C0\u03B1) is the 10th letter of the Greek alphabet, used to represent the voiceless velar stop, or \"k\", sound in Ancient and Modern Greek. In the system of Greek numerals it has a value of 20. It was derived from the Phoenician letter Kaph. Letters that arose from kappa include the Roman K and Cyrillic \u041A."@en . . .