Yor Forger is described as a beautiful and graceful woman in her late twenties with a slender yet curvaceous physique. She has long, straight, black hair, and striking red eyes.
Her typical outfits include casual wear like a semi-backless red off-shoulder sweater with black tights and a skirt, and a work uniform at Berlint City Hall consisting of a white shirt, green vest, and skirt. When going out, she often adds a long coat.
Her assassin attire, known as the Thorn Princess outfit, is a black, form-fitting, halter-style dress with a red rose pattern inside the skirt. This is complemented by black thigh-high boots, fingerless gloves, a rose choker, and a distinctive gold headband. Her weapons are gold needle-like stilettos.