Check out Spider fighting robot 3D model on CGTrader for $40. High-quality mesh by hdt2097777: 311285 polys, 288143 vertices. PBR, Textured, UV Mapped.
BLEND (Blender, filesize: 60.7 MB), OBJ (OBJ, filesize: 46.1 MB), FBX (Autodesk FBX, filesize: 23.7 MB), PLY (Ply, filesize: 8.68 MB), STL (Stereolithography, filesize: 27.2 MB)