Highly detailed 3D model of Marvin, the depressed robot from The Hitchhiker’s Guide to the Galaxy. Marvin has a rounded, futuristic design with a slightly slouched posture. His head is large and slightly tilted, with glowing, melancholic eyes that radiate a sense of existential dread. The body is sleek and metallic, with visible joints and subtle scratches showing wear. The overall mood should reflect his sarcastic and pessimistic personality, with a clean sci-fi aesthetic.