Grumpy Cat, whose real name was Tardar Sauce, became an internet sensation in 2012 after her photo was posted on Reddit. Her permanent cranky expression, caused by feline dwarfism and an underbite, made her the perfect face for pessimism and sarcastic wit. As one of the most recognizable memes in history, Grumpy Cat represents a universal disdain for almost everything, often paired with the simple word 'No' or captions about hating social interactions. Even years after her passing, her image remains the gold standard for expressing disappointment and grumpiness in online culture.