3D Model: Create A Game-ready 3D Character For Unreal Engine That Is 90% Human And 10% Alien. The Character Is Tall, Lean, And Muscular — Athletic But Not Bulky. Skin Color Is A Subtle Mix Of Gray And Green, Giving Him An Otherworldly But Still Human-like Appearance. Include Faint Alien Features Like Slight Facial Markings, Glowing Or Reflective Eyes, Or Unusual Skin Texture Patterns. His Special Power Is To Transform Into Other People, So His Design Should Feel Mysterious And Adaptable — Possibly With A Neutral Expression Or Partially Shifting Skin Texture. The Model Should Be Realistic, Detailed, And Optimized For Real-time Rendering In Unreal Engine, With Clean Topology, Proper UVs, And PBR Textures.