Jasper "Harpo" Hale (born Jasper Whitlock in 1844, in Houston, Texas) is one of the few surviving vampires of the Southern vampire wars, who later joined the Olympic coven. He is the husband of Alice Cullen and the adoptive son of Carlisle and Esme Cullen, as well as the adoptive brother of Rosalie Hale, Emmett and Edward Cullen. Jasper is also the adoptive brother-in-law of Bella Swan and the adoptive uncle of Renesmee Cullen.
After becoming a major in the Confederate Army, Jasper was set upon by the vampire Maria, who proceeded to turn him. After the transformation, Jasper aided Maria in her creation of a newborn vampire army which successfully conquered the feeding grounds of Texas. However, over the next decades, Jasper became tired of this violent and bloodstained life, because he could feel the emotions of those he killed, which eventually became too much for him. In 1940s, he left his bloodthirsty coven to become a nomad. In 1948, he met Alice, the love of his life, and with her joined the peaceful Cullen family - a coven of vegetarian vampires. By living a vegetarian, he was freed from the emotions that so depressed him.
He is portrayed by Jackson Rathbone in the movie adaptations.