With all the digging going around, I'm amazed no one has bothered to look into the images themselves! I figured they might leave some clues in there (Halo 3, anyone?), so opening it with notepad I find it. On the first line.
Ducky, the Purple... Walrus? As far as I know, Dashow has never named anything Ducky, but who knows.
While it might not mean much now, if the announcement at diabloii.net is real, I leave it to you guys to go find who/what Ducky is among all the Blizzard artists. Good luck!
Edit:I had to take out the quote of it because it was breaking the code tag and erasing the rest of the post, but if you want to see it, just go open it.
PlugY for Diablo II allows you to reset skills and stats, transfer items between characters in singleplayer, obtain all ladder runewords and do all Uberquests while offline. It is the only way to do all of the above. Please use it.
Supporting big shoulderpads and flashy armor since 2004.