The character of the E3 2009

[Raetah]

Well recently i was listening the theme used in the Karagol Sea and then i remembered that the same song was used in the E3 of 2009.
I decided to watch the E3 video and i noticed that the protagonist there seems to be different from Matthew, different colour scheme even different design of Hair, who was suposed to be him? A prototype of Matthew or another character? Does anyone knows more about this?
http://www.youtube.com/watch?v=5BrBpdPLeRA
Or perhaps im just crazy, but i see him different.

[Daddy Poi's Oily Gorillas]

It's probably a prototype of Matthew, me thinks...

Why not try looking for the E3 Kiosk Demo?

[Misery]

I agree, probably a prototype. Then art direction kicked in and said "No... try to make him more like a copy of Isaac."