Darth Vader

Darth Vader is the main antagonist of the original trilogy of the Star Wars Franchise. For some reason, he was brought to World Prime. After his defeat in The Return of the Jedi, he has returned and built a third Death Star.

Trivia
In Return of the Jedi, Darth Vader actually turned back to the Light side just before his death, yet we see him here back on the Dark Side. This is quite the strange anomaly, is it not? Perhaps we'll find out what happened later on. (Who knows, maybe he's really the Emperor in disguise.)

He once got a 1-up Mushroom... so he technically has 2 lives.