Clock Face was a guest at one of Prismo's parties in "Wake Up." It is possible that he is from Ooo, as his watch displayed the time it was there.
Clock Face has a head with an enormous clock on his shoulders. The rim of the clock is grayish in color and dark gray on the sides. His eyes and mouth are separately placed on each of Clock Face's clock hands with his mouth on the larger hand and his eyes on the smaller hand.