Pete is the archnemesis of Mickey Mouse, and is a member of the Villain League.
Pete's personality has change over the years but one factor has remand the same: he is always up to no good. When up against Mickey, he uses his physical force to win against his small hero counterpart, but in Goof Troop he uses his cunning to scam his dimwitted neighbor, Goofy, but like always he comes out on bottom and has to go back to the drawing board. Also he used to chew tobacco in his steamboat captain days, but he has apparently kicked the habit. Pete explained in Mickey, Donald and Goofy: The Three Musketeers, that he became evil due to the fact that he was hated by his mother.
Pete first appeared in the Walt Disney-produced 1920s "Alice Comedies" short subject series. He first appeared in Alice Solves the Puzzle (February 15, 1925) as Bootleg Pete. His nick-name is a reference to his career of bootlegging alcoholic beverages during the United States Prohibition (January 16, 1920 - December 5, 1933). His activities brought him at a beach in time to see Alice playing with a crossword puzzle. Pete happened to be a collector of crossword puzzles and identified Alice's puzzle being a rare one missing from his collection. The rest of the short focused on his antagonizing Alice and her drunk-on-moonshine cat Julius in order to steal it. The menacing, bear-like villain commanded quite a presence on the screen and was destined to return.
When Disney needed a villain to place against his new star Oswald the Lucky Rabbit, Pete was again put to good use. His introduction to his new adversary came with the sixth Oswald short The Ocean Hop (September 8, 1927). Apparently inspired by Charles Lindbergh, the two enter an aeroplane race across the Atlantic Ocean. Hugh Harman and Rollin Hamilton were responsible for animating several inventive gags during the film. At least one became a classic. At some point Oswald runs off a cliff and continues to walk on air without the effect of gravity until realizing there no ground to stand on. The gag would be reused in many cartoon shorts to come. One should note that Charles Lindbergh also served as the inspiration for Plane Crazy (May 15, 1928) , the first cartoon to feature Mickey Mouse and Minnie Mouse.
In the cartoons of the 1930s, Pete would be Mickey Mouse's nemesis, but would vary in professions, from an all-out outlaw (Gallopin' Gaucho) to a brutal law-enforcer (such as Moving Day in which he is a sheriff who serves Mickey and Donald Duck with an eviction notice). Pete has been the nemesis in most Mickey and Friends productions. in most modern to past cartoons, with the exsection of Mickey, Donald, and Goofy: the three muskaters, and several other things Pete related, Pete seems to be lacking the peg-leg, this was untill the mentioned text from above that the peg leg returned.