Emperor Evulz only comes dangerously close to winning.
Emperor Evulz is actually an Anti-Villain who is fighting for a noble cause, but his reprehensible Utopia Justifies the Means actions are what set Alice and Bob against him. While they defeat Emperor Evulz, they then take up his cause and achieve it themselves. While Emperor Evulz's own efforts may have failed, his original goal is ultimately achieved, so in a sense he still wins.
Double Subverted: Emperor Evulz eventually gets reimbursed...
Deconstructed: Emperor Evulz kills the heroes, conquers of the world, and is sitting pretty on his skull throne. And suddenly the thought crosses his mind: "what now?"
Reconstructed: "Well, I could always build a new World Wonder so that people remember me when I am gone..."