BiographyMickey Mouse, Walt Disney's most famous character, Mickey Mouse has become an international personality, and Mickey Mouse has become one of the most symbols of the Twentieth Century. Mickey Mouse was born in Walt Disney's Universal, early in 1928 on a ride from New York to Los Angeles. Walt Disney drew a little mouse in red velvet pants and named him "Mortimer". later his name was changed into "Mickey." A star was born! Important facts about MICKEY MOUSE