Please remember that Sonic the Hedgehog is the intellectual property of SEGA. While downloading fan-made models for personal art or animation practice is generally tolerated by the community, (games you sell, merchandise, etc.) without a license from SEGA.
Select the model file and navigate to the in the Inspector. sonic.fbx full version
Look for the file to include accompanying texture maps (Albedo, Normal, Metallic, and Roughness). The "full version" should not rely on basic vertex colors but on high-resolution textures that catch the light like a modern AAA game. Please remember that Sonic the Hedgehog is the
Many 3D artists host custom-sculpted, fully rigged modern or classic Sonic models available for free download under Creative Commons licenses. Look for the file to include accompanying texture
If Sonic appears gray or untextured, navigate to the Shading tab. Ensure the image texture nodes are correctly linked to the Principal BSDF shader.
Perhaps the most confusing aspect of this search is the fact that "Sonic.FBX" is also the name of a specific fan-made horror game. This fangame is often cited in search results alongside 3D model downloads.