Sir Percy is a fictional character from the novel "The Scarlet Pimpernel," written by Baroness Orczy in 1905. He is a British aristocrat who leads a double life as a daring hero, rescuing French aristocrats from the guillotine during the French Revolution. Sir Percy is known for his clever disguises and quick wit, often outsmarting his enemies. In his public persona, Sir Percy appears to be a foolish and carefree nobleman, which allows him to conceal his true identity as the elusive Scarlet Pimpernel. His adventures are marked by bravery and a strong sense of justice, making him a beloved character in literature.