Passage: Shrek, a solitary ogre, finds a surprise when fairy tale creatures are sent to live in his swamp by Lord Farquaad. He befriends a talking donkey whose name is also Donkey, and they set off to meet with Farquaad. The latter needs Princess Fiona to marry him so he will become the king of Duloc. When Shrek and Donkey visit him, they are forced to rescue her from an enormous fire-breathing dragon. The Dragon turns out to be female, and she falls in love with Donkey.

Question: If Princess Fiona marries him. What will he be?
king of Duloc