Who was Sir Percy Blakeney

Percy Blakeney appears to us first as the maligned husband of Lady Blakeney -- one of the richest, most fashionable men in England, but also a reputed dunce. He is built like a truck, apparently, with big shoulders and muscles, but this only adds to his reputation as a stupid stooge. But Percy is of course secretly the Scarlet Pimpernel who raids the barricades of France to save condemned French aristocrats from the guillotine.