Obscuring faces from the audience Right now I have an antagonist whose face is barely or even never fully seen throughout the movies.

And not in the way that he wears a mask or disguise, all the other character are perfectly able to look and see his face. What I really want is for the audience to only ever see rare skims of what he looks like. 

Just thinking out loud it seems that this would require a lot of referencing the camera, which seems to be frowned upon.

So really any suggests would help 