Okay, so I downloaded the Roblox starter rigs pack and when I select a rig it appears with some black things in the material preview and render view. In Cycles I don’t see the black things but in EEVE I do. I tried to load it on the 3.5 and 4.0 and it stills the same. Im using a Mac.
Hello and welcome to the forum!
To me, that looks like there is an image UV mapped to the mesh. Look in the Image editor to see if there are any images in your .blend file. Having the mesh in edit mode, with everything selected should show you how they are mapped to an image.
I find that interesting, because your screen shot shows you are in material preview mode and using cycles.
Anyway, if that’s not the problem, upload a .blend file. Since you are new here, you probably can’t attach the file to this post, so use a file hosting site and post the link here.
Hope this helps,
Randy