Mando shouldn’t have shown his face, Boba Fett shouldn’t have shown his face, Darth Vader wouldn’t have shown his face, the STIG should never show his face, and Master Chief should never show his face.

With models, don’t show faces. Why not? We want to put ourselves behind the mask or helmet of others, to become them.

The darkness and mystery is what most intrigues us?

Similarly speaking when it comes to advertising, never show the face of the model. Ideally just highlight and focus on the product, not the human behind it.