Napoleon

a person of rank, power, or influence in a particular field started out as a small-time banker but ultimately became a Napoleon of finance Synonyms baron, captain, czar (also tsar or tzar), king, lion, lord, mogul, monarch, magnate, prince, tycoonRelated Words big boy, big cheese, bigfoot, biggie, big gun, big shot, big wheel, bigwig, fat cat, figure, heavy, heavyweight, honcho, kahuna, main man, mover and shaker, nabob, nawab, notable, personage, pooh-bah (also poo-bah), supremo [chiefly British], VIP; celebrity, personality, star, superstar; deity, demigod, godNear Antonyms half-pint, lightweight, small-timer; inferior, subordinate, underling; nobody, nothing, zero