His stache is gone... and along with it, part of himself! 
  
If I was more obsessed I would create a petition to get a handlebar back on that ride... but instead I will just proclaim here on the Giant Bomb forums that, how are you supposed to have a man as a mentor who does't sport a badass boomerang!?

I honestly thought Sully had a complete character model change (infamous 2 style) because I knew something was wrong with him but didn't know what. 

That's the twist, it's not the real mustachioed Sully.

It's his evil twin, evil twins always have inverse facial hair tendencies to the good twin.

What part of Drake's Deception are you not getting? It's obviously Sully's evil twin that will deceive Drake in the story. Duh. 
 
EDIT:Ninja'd

wait what the hell?  i didnt even notice.  knew something was wrong.  i'm willing to bet in the beginning, drake and sully start off with no facial hair and by the end they have plenty of it.   
 
just like they'll both start with their shirts fully-tucked.  we all know how that'll end.

It's just in multiplayer. You unlock his stache at level 50.

So if Uncharted 3 is about evil twins with inverse facial hair, what's the opposite of Drake's constant stubble?

@Slaker117 said:

So if Uncharted 3 is about evil twins with inverse facial hair, what's the opposite of Drake's constant stubble?

It's not the stubble that is changed, his shirt gets untucked.

What sucks is they actually taunt us with what his stache would look like if they kept it in.  
 
    

The nerd obsession with facial hair is rather silly.

Sully will have a customizable stache in the retail version............ or not, we can dream can't we?

@Slaker117 said:

So if Uncharted 3 is about evil twins with inverse facial hair, what's the opposite of Drake's constant stubble?

They'll throw it in as a preorder bonus I'm sure.

Sully's Stach will be DLC 

Sully's Stach will be DLC 

what if Sully actually betrays Drake...

@the_OFFICIAL_jAPanese_teaBAG said:

what if Sully actually betrays Drake...

What if Sully's mustache takes control of Sully's mind and betrays Drake??

What if the mustache mind controls Drake and he betrays Sully??

What if the mustache takes over the world??

It's very simple, guys.. 
 
He went into the bathroom, shaved his mustache, and took a shower. 

They'll throw it in as a preorder bonus I'm sure.

@the_OFFICIAL_jAPanese_teaBAG said:

what if Sully actually betrays Drake...

What if Sully's mustache takes control of Sully's mind and betrays Drake??

What if the mustache mind controls Drake and he betrays Sully??

What if the mustache takes over the world??

@jorbear said:

@the_OFFICIAL_jAPanese_teaBAG said:

what if Sully actually betrays Drake...

What if Sully's mustache takes control of Sully's mind and betrays Drake??

What if the mustache mind controls Drake and he betrays Sully??

What if the mustache takes over the world??

instead of the blue people, what if Sully's moustache grows on people and it turns them into super humans? so many questions...