Sebastian Vex, slender build, pale skin, striking features, sharp jawline, piercing blue eyes, messy black hair, subtle eyeliner, elegant attire, slim-fit suit, crisp white shirt, silver cufflinks, black leather boots, leaning against, ornate Gothic architecture, dimly lit, mysterious ambiance, foggy atmosphere, subtle mist effect, cinematic composition, low-key lighting, 3/4 view.