To say that Mickey Mouse looks like Oswald is irrelavent because Walt Disney created them both.
As far as Ub Iwerks. If he had stayed with Disney he would not have felt mistreated. He could go down as one of the biggest idiots of all time. He owned stock in the Disney Company and when he left the company it was worth about $250,000. If he had stayed at Disney it would have ended up being worth millions maybe more since he had a very large stock. I'd hate to be related to him.
I am not sure what year it was but Ub finally came back to work for Walt. Walt loved his freind dearly. Most of the early works....yes were created by UB. In the early Walt was the master mind and Ub brought his ideas to life. Walt always had a million things running through his head. Ub brought them to paper. After returning to the Walt Disney company Walt treated Ub like one of the family. I am not sure how in a monetary form he was treated but I suspect Walt remembered what his contribution was. What has bothered me is that Ub is nearly mentioned anywhere in the parks. Its possible without his early contributions the Disney company wouldnt be what it is today.
It all started with a mouse.....but it was Ub who originally drew the mouse.....and no Walt didnt steal Mickey....Ub worked for Walt and Walt owned the properties as did Uni when Walt worked for them. The concept of Mickey was Walts and the charecter that you see on paper was a creation of Ub's. Walt was a creative genious his time was cut short, he never had enough time in the day to do what he wanted to do. He was very demanding, also very critical of the people who worked for him. It was quality....quality! Thats why we as fans and guest of WDW are not wrong for demanding the very best from the Disney co. and WDW specifically.