Using real people or not, aren't all commercially driven characters the original creator's OCs? I mean if I faceclaimed someone like Clark Kent, and used the comics and and an actor and his face in the movies, but said the guy was Jim Frederickson, wouldn't I be half-stealing Superman?
I'm completely against faceclaims that aren't generator based, with the intent of the generator to represent an OC or design. (Gaia is an obvious "don't use it," the TOS specifically states so.)
Actors are "faceclaims" for a living.
No! Actors are paid people, with the agreement of both the actor and the director(s) and creator(s) to represent a specific character (you can say that's the original writers Original Character (OC!!!!)). There is permission on every front for that person to be that character. It's not a faceclaim, it's an agreed representation, not only face, but body, voice, and mannerisms.
Grabbing an image off google images (which is not a free-for-all) is breaking permission from: the actor being used, the people who type-cast them, the people in charge of framing/lighting/etc, and whatever company holds copyright. It is absolutely infringement, just as much as stealing someone's art off of deviantart, or reposting some pixiv artists' art, or anyone behind that anime/visualnovel that was so unlovingly ripped from.
Faceclaims are not okay at all, honestly.