My son thought that kind of looked like an "early/young" Ganondorf. We've been speculating if he's revealed anywhere in Skyward Sword. We also thought of
Groose, but he turned out to be too helpful so we're thinking probably not.
And as I mentioned in the other thread, we found a cameo by Tingle... but no one seems to care. (I guess Nintendo was right not to bring Rupeeland to the U.S.) We were wondering if anyone else saw him.