LeChuck of the Monkey Island games!
From a lovestruck human
to treasure hunter / adventurer / ship captain
to murderer of his own crew and the grandparents of his worshiped Elaine
to kidnapping ghost pirate captain
to disguised town sheriff
to torturing voodoo zombie pirate captain
to reincarnated demon pirate captain
to disguised polititian running for govenor
to ghost possessing/controlling a giant statue
to cursed zombie pirate captain
to charming uncursed human
to (almost) invincible pirate god
to mere voodoo essence after his physical and spiritual forms were destroyed.