Help on Pyramid Head Model

[Mudbill]

Go enable that, and you can see just how many polys you have. Pay attention to the tris. That's the real amount. You should also never have more vertecies than faces, just in case you didn't know. According to the image, it does look fairly low-poly. If I were to guess, I'd say between 2-4k, which is okay for a monster. I don't quite remember, but I think the Grunt has around 2k.

Also, are you exporting the model correctly? No light, no camera, triangulated.

Perhaps you can attach the log file for the ModelViewer / Editor after failing to load it?