Well, I've confirmed it...

[xennyth]

Spoiler w/in-game screen capture.

Spoiler

There you have it, G-man is GLaDOS.

 

[Ridge]

Except we already know that you can import HL2 maps into Portal with minimal trouble...and why do you have 2 blue portals?

 

[Acepilotf14]

He doesn't, he is just looking at the inside of the other portal. It's confusing.
Lul.

 

[xennyth]

Except we already know that you can import HL2 maps into Portal with minimal trouble...and why do you have 2 blue portals?

1] Don't take everything so seriously.

2] I'm looking into the blue portal and out of the orange one, which was placed so that I could include both myself and g-man in the screen capture.

 

[xennyth]

Also, (and I hate to double post) but the cake is real.

Spoiler

We had a party, and my good friend, the weighted companion cube, was able to make it after all.

And then we escaped.

 

[Cheomesh]

Your cake is a LIE :|

 

[RandomX]

Your lie is a cake! What?

 

[MJ12]

I didn't know how huge that companion cube was.

 

[KMascalye]

what is the gman sitting on?

 

[xennyth]

what is the gman sitting on?

Air, most likely. Or maybe an invisible companion cube?

 

[OfF3nSiV3]

indeed, the cubes are huge!

 

[k3ithrm]

Why's Gman cutting his leg with is briefcase?

 

[Lanthanide]

Air, most likely. Or maybe an invisible companion cube?

Well, that proves it. The g-man is a deviant - he's sitting on an invisible companion cube. What a creep.

 

[ríomhaire]

Your cake is a LIE :|

Ironically, the cake was true, you just weren't going to get the chance to eat it.

 

[Cheomesh]

Icing hurts my teeth :<