A well-respected doctor, thought to be based on notorious nineteenth century individuals William Brodie and John Hunter, Jekyll is a member of the upper-class with a very large secret to hide. His secret is Mr Hyde, who was created as a result of his experimentation. He is shown to be kind and generous, but shocks Utterson when he decides to change his will to leave everything he owns to Mr Hyde. It is implied inexplicitly that he was rather rambuncious and ill-behaved during his late teens / early twenties, alongside subtle hints that he may have engaged in homosexual relationships.