Smooth Cheeks, also known as King Pig or King Pig Smooth Cheeks, is the main antagonist of the Angry Birds series, serving as the main antagonist of the original game series, the main antagonist of the TV series Angry Birds Toons, the secondary antagonist of Angry Birds Epic, the unseen overarching antagonist of Angry Birds Rio, and the deuteragonist of the spinoff game Bad Piggies. He is a pig, the current monarch of the Piggy kingdom, and the heir of his father, Leonard Mudbeard. He is the arch-nemesis of the Angry Birds.