Mickey Mouse and Ub Iwerks. Iwerks again served as the head animator, assisted by Johnny Cannon, Les Clark, Wilfred Jackson and Dick Lundy. This short was intended as a parody of Buster Keaton's "Steamboat Bill, Jr.", first released on May 12 of the same year. Although it was the third Mickey cartoon produced, it was the first to find a distributor, and thus is considered by The Disney Company as Mickey's debut. "Willie" featured changes to Mickey's appearance (in particular, simplifying his eyes to large dots) that established his look for later cartoons and in numerous Walt Disney films. The cartoon was
Mickey Mouse of corrupted lawyer Sylvester Shyster and Minnie's uncle Mortimer Mouse. The Death Valley narrative was followed by "Mr. Slicker and the Egg Robbers", first printed between September 22 and December 26, 1930, which introduced Marcus Mouse and his wife as Minnie's parents. Starting with these two early comic strip stories, Mickey's versions in animation and comics are considered to have diverged from each other. While Disney and his cartoon shorts would continue to focus on comedy, the comic strip effectively combined comedy and adventure. This adventurous version of Mickey would continue to appear in comic strips and later comic books