$4 Knuckles 04 Low-poly 3D model by sergeyanzurov011. Available on CGTrader with 2296 polys and 2286 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 1.1 MB), OBJ (OBJ, filesize: 304 KB), FBX (Autodesk FBX, filesize: 182 KB), GLTF (glTF, filesize: 13.8 MB), DAE (Collada, filesize: 604 KB), STL (Stereolithography, filesize: 224 KB), TEXTURES (Textures, filesize: 8.88 MB)