lineup of 5 hyper-realistic AI halloween portraits, each distinct — (1) cosmic witch wearing iridescent space veil, (2) haunted astronaut in cracked helmet under red nebula glow, (3) digital reaper cloaked in glitching pixels, (4) neon vampire with ultraviolet hair, (5) dreamcore doll in porcelain skin with cracked texture — cohesive moody lighting, cinematic HDR detail