My Respawn System

How do you kill someone that cannot be killed? That was the question everyone asked when the respawners mysteriously appeared throughout the whole world. These beings, the wickedest of villains and killers from among both humanity and beasts, cannot die. They instantly respawn in new bodies whenever they are killed. No one knows why and no survives long enough to find out why. Millions have perished at their hands while the rest of humanity now suffers from their severe oppression. Hitler’s Nazi Germany, Stalin’s Russian Red Army, the Ancient Japanese, the Vikings and many more are all powerful empires under control of their immortal rulers who have come to life from the past. Along with the help of the mysterious Creator who reportedly provides these respawners with powerful technological weapons, a new World War threatens to drive humanity dangerously close to extinction. Humanity begins to finally lose hope when a blue flash of lightning gives humanity a new lifeline. Another respawner had entered the world for the first time in years. Instead of becoming another fiend like his kind he has become a salvation for humanity. But would this be enough to save them?