Whose Demon King Doubles as the Spiritual Mentor of the Brave?

I, Sabolon, the current Lich Demon King, my biggest worry is not that the brave is too strong, but that I am too weak. Weak enough to be beaten to pieces by ordinary people with a stick, he can only stay in the Demon King's Castle to build bone figures, and wait for his own death. Until that day, I awakened a new skill [Clone Creation]. Looking at the created apostle - the unparalleled vampire girl in front of me, a perfect life-saving plan took shape in my mind. The first step is to use your clone to approach the hero. The second step is to gain trust and backstab or deceive them. The third step is to have eternal peace of mind! The plan goes through! ... That's how it should be. However, faced with the absolute power of the heroes, the massive invasion of the demon army, and the gradually changing eyes of the heroes around him, Sabolon's heart was filled with despair. "Please don't keep my apostles with you anymore!"