1. X and Y are named after protagonists from a 16th century literary work. X was previously known as the world's loneliest frog until scientists found him a companion, Y, on an expedition. 2. A company called Routeroys got inspiration for a certain "Chappel's" design from something that came up in October 2016. 3. In Kleberg County, Texas, the greeting "X" was designated as the official greeting in 1997 as a "symbol of peace, friendship and welcome" to replace "Hello" which was deemed somewhat satanic.