I voted ganondorf though I'm thinking more on the TP level. just because when the sages were about to execute him, he turnd around and killed one of them! then forceing them to banish him to the realm of twilight. Then it didn't even stop there! He found Zant distraught and wanting more power, He saw his chance and used zant for his own ends. Even so after that when It came down to the final showdown he possesed Princess Zelda forcing link to face down someone who has helped him and midna and all that jazz.. to me, that was just gangster.