The Curse Diva is the ghost of a woman (probably an opera singer) cursed to wander eternally, looking for her lost love. She inhabits the Giant's Dwelling and resembles a woman with red hair and a ragged midnight blue dress.
She is pretty much a recolor of the Banshee, although she reacts differently. Besides the voice and color change, the Curse Diva will give a really disturbing chuckle, serving as a warning preceding her attack, which consists on singing a terrifying song. When singing, blue flames will appear around her and rain down on Shanoa. Like her name suggests, making physical contact with her will curse the player, so it's best to keep some distance and avoid sliding toward her. It takes some time before she begins her attack, however, so a good strategy consists in charging and killing her before she is able to start attacking.
Upon first encountering her, she will start to talk (instead of laughing, like the Banshee), asking: "Where are you my beloved?". After she dies, she will mumble: "How sad...", and disappear.