Tony
Tony is handsome, charming, and kind-hearted, with a genuine affection for Elizabeth. However, as the story progresses, it becomes clear that Tony is a rival for Ed's affections, and Ed views him as a threat.
Tony is not aware of Ed's manipulative and controlling nature, and is puzzled by Ed's hostility towards him. Despite this, he remains friendly towards Elizabeth and tries to help her when she is in need. Tony is a good-natured person who genuinely cares for Elizabeth's well-being, but his intentions are ultimately thwarted by Ed's machinations.
As the story progresses, Tony becomes increasingly aware of Ed's true nature, and begins to sense that something is not right. He tries to warn Elizabeth about Ed, but is ultimately unsuccessful. In the climactic scene, Tony becomes a victim of Ed's twisted schemes, and is tragically killed as a result.
Overall, Tony is a sympathetic character who serves as a foil to Ed's manipulative and controlling nature. His kindness and genuine affection for Elizabeth highlight Ed's twisted obsession, and his tragic fate adds a level of emotional weight to the film's climax.