No one among the Human Race or Beast Race could ever wield the power of the Undead Race.
The Evil Ghost Emperor was probably the only exception for that.
For thousands of years, the Evil Ghost Emperor contributed a lot to the war against the Undead Race at the Central Continent.
On contrary to his title as Evil Ghost Emperor, his attitude and behavior were actually far from evil. He confronted the Undead Race's armies so many times and saved countless people on the Central Continent with his armies of living corpses and skeletons.
Even though the Undead Race higher-up prioritized hunting down the Evil Ghost Emperor, but no one could kill him until the end.
The Evil Ghost Emperor died not because he got killed by anyone but because his lifespan was over.