"MAD CAT” INSPIRED THE CHARACTER “CHESHIRE CAT“ Wiki 🤓 The Cheshire Cat is a fictional cat popularised by Lewis Carroll in Alice's Adventures in Wonderland and known for its distinctive mischievous grin. While now most often used in Alice-related contexts, the association of a "Cheshire cat" with grinning predates the 1865 book. Quote: "Most everyone's mad here."; "You may have noticed that I'm not all there myself."