The Cheshire Cat (チェシャ猫) is a fictional character created by Lewis Carroll in the 1865 novel Alice's Adventures in Wonderland. Known for its distinctive, wide grin, this mischievous cat possesses the ability to disappear at will, often leaving only its smile behind. It serves as an enigmatic, philosophical guide to Alice, offering cryptic advice and famously remarking that "we're all mad here". Throughout the story, it remains more of an amused observer than an active participant in Wonderland's conflicts.