" The Minotaur unstrapped his axe and swung it around. It was beautiful in a harsh I’m~going~togut~you~like~a~fish kind of way. Each of its twin blades was shaped like an omega: Ω—the last letter of the Greek alphabet. Maybe that was because the axe would be the last thing his victims ever saw "

― Rick Riordan , The Last Olympian (Percy Jackson and the Olympians, #5)