Mickey Mouse is a series of American animated comedy short films produced by Walt Disney Productions. The series started in 1928 with Steamboat Willie with 2013's Get a Horse! being the most recent short in the series to date, otherwise taking a hiatus from 1953 to 1983. The series is notable for its innovation with sound synchronization and character animation, and also introduced well-known characters such as the titular protagonist Mickey Mouse, Minnie Mouse, Pluto and Goofy.