Dem bones is not a corporeal person. The benevolent dictator of E2 is actually just a puppet, chanelling the spirit of Alexander the Great. Hence he calls himself dem bones, he's been dead for millennia. The day-to-day operation of E2 is dictated to the "bones" we know and love via his ouija board mouse pad.

Next week, we'll learn about how team jet-poop is really working for the trilateral comission, and Dman was actually a reincarnation of Atilla the Hun.