Some things the article doesn’t mention… Hidden person in the middle=Gray? Zepheniah Mann’s will updated (with the hidden message revealed). Gray Mann = G-man? (even if it means nothing, they do look a lot alike)
MEET THE PYRO!! Spoiler below.
If anyone out there knows the answer to this thread, be a dear and reply to it. 😀 Surfacing in TF2 (The toon shader effect mentioned is the same effect that appears on the Mad Milk, and possibly Bonk and Crit-a-cola.)