Emilio Rosselini
Emilio Rosselini was a mean, homely and distasteful -- but moderately clever -- crook. He might have amounted to something in life if he'd had more ambition, but Emilio was mainly into sexual sadism. Unfortunately, for him, he was living before the Internet opened people's minds about bondage. His contemporary, the Marquis de Sade, spent most of his adult life imprisoned and syphilitic due to the same hobbies that Emilio practiced. Unlike de Sade, however, Emilio was protected by his family and by the Giovanni Kindred, who found it quite useful to have someone else to abduct and dispose of their sustenance. What Emilio Rosselini did to people before they got bled dry was of little concern to his masters.
Although the primitive constables of Emilio's era couldn't catch him (or didn't care to, as his victims weren't important people), the same was not true of Frantz Dupage. Emilio had snatched, brutalized and then buried Louisa Dupage, Frantz's sister. Frantz stalked, captured, tortured and killed Emilio with a precision and ruthlessness worthy of any Kindred (or, indeed, of Emilio himself). That should have been the end of it, but Emilio's Giovanni masters were upset at the loss of a useful servant, and they vented their displeasure on Frantz. They weren't done with Emilio either.
Emilio had made a pact to return as a wraith, and so he did. At first he feared that, without a body, he would be unable to pursue the pleasures he'd known in life. It turned out that as a creature of emotion, he was far more fulfilled than he had been as a creature of flesh.
Emilio thrives best on a particular combination of attraction and repulsion. He can restore himself with a bitter married couple who stay together because that's all they know, or with a young lover who suspects his girlfriend is unfaithful -- but who can't be sure. Of course, he's not always so choosy. Because he was a beaten-down thug in life, he also thrives on the fear spawned when others are afraid of him.
In the modern nights, Emilio finds purpose as a ghostly taskmaster and warden. He keeps other ghosts in line and dispatches them to their Kindred masters when duty requires it. It would seem that of all his unpleasant qualities, his sadism has found its greatest use after his death.