dark fantasy, male demon, muscular physique, black bat wings, curved horns, pointed tail, tribal tattoos, glowing red heart, gothic ruins, misty background, ethereal light beams, dramatic shadows, shirtless demon, black flowing garment, messy dark hair, menacing grin, eerie atmosphere, intense mood, supernatural being, dark aesthetic, digital illustration, fantasy character design, shadowy environment, gothic architecture, mystical vibe, powerful stance, detailed anatomy, cinematic lighting, dark tones, vibrant accents, occult themes, demonology, fantasy art, brooding presence