Board Thread:Metal Gear Solid V/@comment-151.24.143.80-20140412190640/@comment-1672596-20140416113206

Kaz wasn't exactly working for Cipher (he even made clear that he was not an ally of them in that secret call, nor was he an enemy for that matter and was at least during that time a neutral business partner), and Paz specifically referred to the person as being an "agent" of Cipher, which implies membership to the group, something that Kaz by his own admission to Zero was not.

That being said, I'm doubtful Huey was the other Cipher agent as well. Had Huey been knowingly in cahoots with XOF and Skull Face, for example, then being a sadistic nihilist or not, Skull Face had absolutely no reason to brutally interrogate Chico into giving the stats of Mother Base as he already had someone in the inside anyways willing to feed that information. The only evidence pointing towards his being a Cipher/XOF agent was Skull Face's statement about "the scientist providing us with a way in." Even that may just mean that Huey had unwittingly exposed the base to danger under the belief that the IAEA did arrange a secret inspection. Heck, who said the Scientist had to be Huey? It also could have just as easily been Strangelove, especially if it turned out he abducted her shortly after her resignation.