 The short, released on September 5, 1927, officially launched the series and proved to be Disney's greatest success to date.The storyline for "Poor Papa" was reused in a Mickey Mouse short five years later, in "Mickey's Nightmare", 1932.Oswald the Lucky Rabbit became Disney's first major hit in 1927, rivaling other popular cartoon characters, such as Felix the Cat and Koko the Clown.