dark fantasy futuristic gentleman assassin, upper body portrait, centered composition, handsome male with pale grey-tinted skin and slicked back dark hair and trimmed sideburns, wearing tailored black suit with steel grey pocket square and black leather gloves, black top hat with thin steel grey band, holding sleek black futuristic pistol casually at side with faint steel grey energy along barrel, charming dangerous smile of someone who kills with elegance, dark upscale lounge background with dim warm lighting, cinematic lighting, semi-realistic painterly digital art, highly detailed, no frame no borders no text