One lesson Disney has learned from this case is to keep all ownership of all the characters it created. In the spring of 1928 , Disney proposed Ub Iwerks to start building ideas for a new cartoon character. Iwerks tried characters such as frogs, dogs and cats, but Disney wasn’t happy. Mickey mouse low top shoes A dairy cow and horse are drawn but also denied. These two animals later became cartoon characters, Clarabelle Cow and Horace Horse.