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
Ub Iwerks of this series, Disney asked Iwerks to come up with a new character. The first Oswald the Lucky Rabbit was animated entirely by Iwerks. Following the first cartoon, Oswald was redesigned on the insistence of Universal, who agreed to distribute the new series of cartoons in 1927. In spring 1928, Disney lost control of the Oswald character, and much of his staff was hired away; Disney left Universal soon afterwards. He promised never to work with a character he did not own ever again. Disney asked Iwerks, who stayed on, to start drawing up new character ideas. Iwerks tried sketches