Well, it does seem like its different people, unless someone is photoshopping some of these pictures.

And I have a hard time watching this video with the sound on, listening to this girl is so cringe.

Some drugs and medical conditions can affect the elasticity of the skin. To me it does look like a mask, but its just as probable it could be the drugs hes on.

I wouldnt be surprised if hes using body doubles, many leaders have done this before.