"You play an elite marine tasked with obtaining the deactivation code for a Strogg weapon. A heavily shielded asteroid codenamed 'The Armageddon Device.'"
It has been suggested that this is the head of one of the co-founders of id Software, either John Romero or John Carmack, depending on the source. John Carmack and John Romero were both instrumental in the development of Quake II. John Romero generally affected long, dark hair and since the head has short sandy-colored hair this suggests that it is John Carmack.