3D Model: Design A Futuristic Action Figure Named Vanguard Sentinel, Standing 150mm Tall. It Features Modular, Detachable Parts: Head, Arms, Legs, Shield, Spear, And Backpack. The Armor Is Sleek Gunmetal Gray With Deep Blue Accents And Bronze Trim. The Helmet Resembles A Knight’s, With A Glowing T-shaped Blue Visor. The Chest Plate Has An Angular Design With A Central Energy Core. Shoulders Are Broad And Rounded; Limbs Are Segmented With Ball Joints For Full Articulation. Accessories Include A Hexagonal Bronze-edged Shield And A Silver Double-bladed Spear. A Rectangular Backpack Mounts To The Back. The Figure Is Stylized, Clean, And Optimized For 3D Printing And Magnetic Modularity. It Blends Futuristic Military Aesthetics With Elegance And Strength, Designed As A High-end Collectible Toy Suitable For Customization And Display. Prioritize Symmetry, Pose Ability, And Visual Impact In The Final Model.