Oswald the Lucky Rabbit time, Felix the Cat and Krazy Kat. Universal was given the right to name the rabbit and it selected a name out of a hat. The first Oswald cartoon, "Poor Papa", was rejected by the Universal studio heads for its poor production quality and the sloppiness and age of Oswald. Disney, together with Iwerks, decided to create a second cartoon titled "Trolley Troubles" featuring a much younger, neater Oswald. 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
Oswald the Lucky Rabbit studio, started voicing Oswald. When Colvig left the studio in 1931, Mickey Rooney took over the voicing of Oswald until early in the following year. Starting in 1932, Lantz ceased to use a regular voice actor for Oswald, and many studio staff members (including Lantz himself) would take turns in voicing the character over the years. June Foray provided Oswald's voice in "The Egg Cracker Suite", which was the final theatrical short to feature the character. She later voiced him again for an unaired radio pilot, "Sally in Hollywoodland" (1947). Oswald made a cameo appearance in the first animated sequence