After the Alice Comedies, Disney's second animated series (after the Laugh-o-Grams) folded in 1927, Carl Laemmle approached Disney and requested a new, all-animated series featuring a rabbit. Disney and Ub Iwerks created a new character entitled "Oswald the Lucky Rabbit". The first Oswald cartoon, Poor Papa, was poorly received by Charles Mintz and demanded a better, younger version of Oswald. The next cartoon, Trolley Troubles, was well received, and the series officially launched.In 1928, with the series going strong, Disney demanded a raise from Mintz, which he refused. Mintz instead told Disney that he was going to cut the budget, and if Disney did not agree to the cut, Mintz would take over Oswald for himself. Disney refused, and most of Disney's employees left for Mintz. Only Ub Iwerks remained, and the two secretly planned out a cartoon featuring their new character, Mickey Mouse. Oswald and Mickey are brothers, since Oswald was the first cartoon, he is the older brother making Mickey the younger brother.