These type of monsters have quite a special case to set up materials. For this model, it needs the texture "EnPharaohD00_BaseColor", "EnPharaohD01_BaseColor" and "ItemPharaohD00_BaseColor" applied with "EnPharaohD00_ALB", "EnPharaohD01_ALB" and "ItemPharaohD00_ALB" applied on top respectively. Also "EnPharaohD00_MSK" and "ItemPharaohD00_MSK" are emissive textures.
I hope this is enough to know.