This is a robot that I created, I have included many different file formats for you to choose from! The model is rendered in PBR but i have posted a photo of it without all of the colours.
STL (Stereolithography, filesize: 4.52 MB), OBJ (OBJ, filesize: 13.9 MB), GLTF (glTF, filesize: 29.2 MB), USDZ (USDZ, filesize: 10.1 MB)