The former commander of the now defunct 5th Squadron of the Demon Slayers. No information regarding the location of Iris's exploits in Grand Gaia was left behind. It is actually believed that such information was purposely erased， and that even the Summoners of Old don't know all the facts behind her story. Some stories claim that once when she was surveying a certain sanctuary， she learned a shocking truth about the great war with the gods. Though there isn't enough evidence to support this， it is said that she was able to do so because she summoned the dead souls of the 12 Guardians of the Gods.