Xix

As Jae Hyuk, Xix is also undead and he formed a contract with a demon, because of that he is mostly fine with any injury he gets. He wants to have revenge on Regis Nex. To get near him, he used Princess Yuan as a hostage, but his plan failed and when Nex ripped his heart out, he endured longer than any other undead, implying that he the necromancer who resurrected him has great skills. He is shown to be Serin's son. His real name is Jyi.