Steroids.
People that take steroids for respiratory problems can get moon face too.
That's Prednisone. Much different from anabolics.
Some guys get round cheeks from certian anabolics. Anadrol is supposed to give a moon face, but I never noticed it, even at 200-250mgs. Kevin levrone never had a moon face, he had a monkey face with protruding cheekbones come contest time. Vince Taylor and Nasser were supposed big anadrol users (can confirm Nasser, but Vince is rumor) and they both had round faces, even though nassers was puffy and Vince's was still lean and round.
Some guys get it was just testosterone and elevated estrogen and aldosterone.
Ron's always looked like that, whether he looks on-cycle or off.