Harold L. Erickson wrote for Britannica:
“Charlie Chaplin, byname of Sir Charles Spencer Chaplin, (born April 16, 1889, London, England—died December 25, 1977, Corsier-sur-Vevey, Switzerland):
…While touring America with the Karno company in 1913, Chaplin was signed to appear in Mack Sennett’s Keystone comedy films. Though his first Keystone one-reeler, Making a Living (1914), was not the failure that historians have claimed, Chaplin’s initial screen character, a mercenary dandy, did not show him to best advantage. Ordered by Sennett to come up with a more-workable screen image, Chaplin improvised an outfit consisting of a too-small coat, too-large pants, floppy shoes, and a battered derby. As a finishing touch, he pasted on a postage-stamp mustache and adopted a cane as an all-purpose prop. It was in his second Keystone film, Kid Auto Races at Venice (1914), that Chaplin’s immortal screen alter ego, “the Little Tramp,” was born.
In truth, Chaplin did not always portray a tramp; in many of his films his character was employed as a waiter, store clerk, stagehand, fireman, and the like. His character might be better described as the quintessential misfit—shunned by polite society, unlucky in love, jack-of-all-trades but master of none. He was also a survivor, forever leaving past sorrows behind, jauntily shuffling off to new adventures. The Tramp’s appeal was universal: audiences loved his cheekiness, his deflation of pomposity, his casual savagery, his unexpected gallantry, and his resilience in the face of adversity. Some historians have traced the Tramp’s origins to Chaplin’s Dickensian childhood, while others have suggested that the character had its roots in the motto of Chaplin’s mentor, *Fred Karno: “Keep it wistful, gentlemen, keep it wistful.” Whatever the case, within months after his movie debut, Chaplin was the screen’s biggest star…”