mini ninja 3D model is available on CGTrader for $3. Original author: CRS3D.
BLEND (Blender, filesize: 34.1 MB), OBJ (OBJ, filesize: 1.58 MB), FBX (Autodesk FBX, filesize: 1.92 MB), GLTF (glTF, filesize: 1.89 MB), 3DS (3D Studio, filesize: 835 KB), DAE (Collada, filesize: 5.16 MB), JPG (JPG, filesize: 2.58 MB), STL (Stereolithography, filesize: 1.28 MB)