
what do you get for killing the king? WILBUR'S flags. Necro's collar, Prophet's eyes, Siren's conch, etc. An extrapolation on the theory: you get an item from killing their final form.All the other swine seem pretty stupid in comparison, and they need a smart leader to run a civilization. He must clearly have at least a half-decent head on his shoulders to be able to control the Swine King. Maybe Wilbur isn't the strongest, but the smartest.Even if Wilbur controls the Swing King, he himself isn't that physically strong, so he would not be considered the king. The swine folk apparently crown the physically strongest among them.Maybe Wilbur is The Man Behind the Man?.This doesn't explain why he's not wearing a crown like the Swine King, however. While it's likely he's just a spotter for the Swine King, he may also be giving orders to a bodyguard of sorts and the swine declared him king for being able to control such a monstrosity. Wilbur is the real Swine KingConsidering that the supposed Swine King kicks your ass if you kill him and he can stun-lock your party to death by screaming at them.
Jossed, The Heart of Darkness is the real Big Bad and was impersonating the Ancestor during the first phases of the fight, who was really dead. He, or at least a good imitation of him, is the Mouth of Sauron for the Heart of Darkness, though he's a Punch-Clock Villain only bound to his role by the Heart's power. The Dragon theory is correct, in a sense. It's far more likely that the Dark God that the Ancestor summoned, and the barbed arch symbol represents, is the Big Bad, but the Ancestor might prove to be The Dragon. The Ancestor may very well be still alive, waiting in the deepest pit of the Darkest Dungeon, and serving as the Final Boss. Making a relative of him inheriting the Darkest Estate could have been a twisted plan to lure some sacrifice fodder right into the hands of the cultists, as well as getting rid of potential Spanners In The Works (the Prophet, the Hag, the bandits.) while expecting the Darkest Estate's hazards and dwellers to be tough enough to prevent the heroes from gaining control of the domain. There isn't any proof that the letter written during the opening was sincere. The Ancestor is the Big BadThe Ancestor was involved in very shady business with dark magic and necromancy.