Mr. Handy robot, healing animation, Fallout shelter theme, post-apocalyptic setting, mechanical arms, silver metal body, yellow paint details, glowing eyes, hovering action, damaged shelter background, rusted pipes, flickering lights, emergency medical supplies, vault door, concrete walls, ambient occlusion, 3/4 view, dynamic pose, worn texture, sci-fi atmosphere, soft shadows, cool color palette, detailed machinery, sparks effect, survival mood, atmospheric lighting, medium shot.