How does your game represent "Power"?
"No one man (donkey) should have all that power."

King Donkey has all the Power and rules his kingdom with an iron fist! The Player has to gain Power by consuming others, but once he gains enough Power to defeat the King, will he be willing to relinquish that Power for the benefit of everyone else?

Every enemy has a Power Level bar above their head, and you can only defeat enemies with lower Power than you. So Power is absolutely central to the game.