Check out UP-Drone futuristic looking robot 3D model on CGTrader for $69. High-quality mesh by ROBOTIZE-PRO: 127401 polys, 140498 vertices.
OBJ (OBJ, filesize: 9.8 MB), MAX (Autodesk 3ds Max, filesize: 19.7 MB), TEXTURES (Textures, filesize: 107 MB), FBX (Autodesk FBX, filesize: 8.7 MB)