This is a Model of the Ghost from Starwars Rebels.
NOTE: When importing into Unreal open the skeletal mesh and under ‘Asset Details’ in the ‘Import Settings’ set the ‘Normal Import Method’ to ‘Import Normals and Tangents’. Then click the ‘Reimport Base Mesh’ Button on the top-left corner. Also check the materials. It’s likely for the roughness map to be connected automatically to the metallic input. Which is not where it’s supposed to be. Just connect the roughness maps with the roughness input. When you import the Model to Unreal. It will create multiple roughness maps all standing for the global roughness map and you can delete all of them and leave just one if you want to save storage.