I'm only familiar with the story of Walt in very broad brushstrokes and was curious to see this story played out, knowing TWDC wanted the editorial control, was denied, yet cooperated with the production. I believe that's a first from what I had heard a while back about this documentary.
Honestly I was a bit surprised that it seems this other animator I'd never heard mentioned before seems to be the actual hand that refined Mickey into the Mouse we know, not Walt -- and is more responsible for the styling of the old characters we've come to know as classic Disney. I've not finished last night's episode yet, but I'm eager to see what became of this other talented animator. It looked to me Walt was very much the influence behind the shift in tone that the Silly Symphonies brought to the world of animation, moving away from the bam! pow! violent storylines to gentler, sillier plots and the animator Ub something shifted Walt's style from similar to the industry norm into the classic styling we know as distinctly Disney today.
The Ubbe ("Ub") Iwerks story is recounted in
The Hand Behind the Mouse.
From Wikepedia
, "In the spring of 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.
[8] Disney asked Ub Iwerks, who stayed on, to start drawing up new character ideas. Iwerks tried sketches of frogs, dogs, and cats, but none of these appealed to Disney. A female cow and male horse were created at this time by Iwerks, but were also rejected. They would later turn up as
Clarabelle Cow and
Horace Horsecollar.
[9] Ub Iwerks eventually got inspiration from an old drawing. In 1925,
Hugh Harman drew some sketches of mice around a photograph of Walt Disney. These inspired Ub Iwerks to create a new mouse character for Disney, eventually called
Mickey Mouse.
[10]"
8. Neal Gabler, "Walt Disney:The Triumph of the American Imagination" (2006), p. 109.
9. Kenworthy, John;
The Hand Behind the Mouse, Disney Editions: New York, 2001. p. 53.
10. Kenworthy, John;
The Hand Behind the Mouse, Disney Editions: New York, 2001. p. 54.