Spider-Man transformed by a symbiotic force, intricately textured and hyper-realistic, with every sinew and web detail vividly portrayed in stunning clarity, set against a moody urban backdrop, showcasing the fusion of Spider-Man's agility and Venom's raw power, ultra-detailed, high-definition, 8k resolution, maintaining a dramatic 9:16 aspect ratio, showcasing the tension and dynamic energy of their merged forms.