A full body portrayal of a terrifying extraterrestrial entity resembling a humanoid arachnid, toxic ichor dripping from its maw as it emerges from the shadowy depths of a cave. Its eyes, an ominous green, gleam with a deadly intensity. The scene is enveloped in an atmosphere of horror, with an intricate, detailed design. The lighting is dramatic, casting eerie shadows, capturing a photorealistic and cinematic quality, enhanced by high-definition clarity and subtle cinematic noise, maintaining a vertical aspect ratio for immersive impact.