Medunamun is a member of the Order of the Ancients appointed by Ptolemy XIII, when he was Pharaoh of Egypt, to serve as the Oracle of Amun in Siwa. He is also known as the Ibis and furiously sought to unlock the Isu vault underneath the Temple of Amun. He and the rest of the Order of Ancients believe that with the Apple of Eden in their hands, they could unlock the gate and acquire the “power of the gods”. Their eagerness to access the vault has caused them to murder the innocent son of Bayek. At that point, the Assassin has realized that he has been serving the wrong side and vowed to avenge the death of his son, Khemu.