As Walt Disney himself once said, “it all started with a mouse”! All of the Disney movies, TV shows, and amusement parks began when a young Disney drew cartoons of a mouse, who was then known as Mortimer Mouse. Today, Mickey Mouse is the most recognizable cartoon character in the world. He represents the entire Disney empire. Mickey’s first appearance in a film on November 18, 1928 in the movie “Steamboat Willie”. He has been appearing constantly in cartoons ever since. Mickey Mouse Day is a day to celebrate the world’s most famous mouse on the anniversary of his first appearance.