In <em>Gulliver's Travels</em>, Gulliver encounters two political parties when he arrives to Lilliput: the high heels and the low heels. The high heels are those who support Lilliput's constitution and the Emperor. The low heels, on the other hand, are the party in power. Swift wants the reader to connect the Tories with the high heels (he himself was a Tory) and the low heels with the Whigs. During Swift's time, King George I was sympathetic to Whigs in the same way that the Emperor of Lilliput was sympathetic to the low heels.
In the story, he is a good friend of main protagonist Gabriel John Utterson. Jekyll is a kind and respected English doctor who has repressed evil urges inside of him.