Who is the 'grey voice'?

[Syncopationist]

When Cloud lands in the cathedral after the fight with the techno-soldier in reactor 5, he has a conversation in his mind with someone. Does anyone have any theories on who this person is? I have thought it through and can't think of any candidates at all. The person obviously knows Cloud (back then, you could get away with just scraped knees.) and is obviously a friend, so it's not Sephiroth or Jenova speaking through Jenova's cells. Anyone care to theorise?

[Kawaii Ryûkishi]

It's Cloud's true self. Pretty obvious, really, especially considering all the scenes where you can plainly see him talking to a transparent version of himself.

[Syncopationist]

I see. Thankyou!

[Holy_Aeris]

Yea, apart from Aeris talking, you coud say its the 'real Cloud' talking to him

[boys from the dwarf]

its definetly clouds true concience and all that stuff.

[MAS82587]

lets wait for squall of seed to respond to this

[Ageless_Bum]

Heh, are you trying to say SoS has some kind of reputation?

[Masamune·1600]

The question's been analyzed.

[boys from the dwarf]

yes SoS does have a rep for knowing everything and making long posts which i can hardly ever be bothered to read.

[Saiyan Knight]

Its his mind i'd say.

[blackchocobo9999]

its cloud true self (or his jimmani krikit)
Also in the conversation there is aeris and clouds outter body sort of

[Teek]

It's Red XIII. His race is telepathatic.

[-N-]

>_<

[Ohhh]

Thx for clearin that up, i thought it was his mom! dnt ask how i got that conclusion....

[Sword]

It is actually Jenova. This happens because Cloud was injected with Jenova's cells. It is clearly given away when it says something (cant remember what) at the part where Aeris dies.