Did you know that Mickey Mouse made his first appearance in 1928 in 'Steamboat Willie', one of the first sound cartoons? Originally named Mortimer, his name was changed to Mickey at the suggestion of Walt Disney's wife. Mickey was also the first cartoon character to speak in a film, saying 'Hot dogs! Hot dogs!' in 'The Karnival Kid' in 1929.
A fun fact about Mickey Mouse is that he was the first cartoon character to have a star on the Hollywood Walk of Fame, which he received in 1978. Mickey's image has been featured on a wide range of merchandise, making him one of the most recognized symbols in the world.