Cornwallis Hankey is one of Mr. Hankey's children. He is presumed very smart, but he is conflicted with being a poo. He appears in the Season Four episode, "A Very Crappy Christmas" and South Park: The Stick of Truth.
Cornwallis is a talking piece of excrement with an orange and blue hat, glasses, gloves and an orange scarf.
Cornwallis is deeply conflicted by being a poo, he doesn't see the bigger picture. His father, Mr. Hankey, sings him a song about it but later reveals he only did so because he wanted to "stop his bitchin'".
Cornwallis plays a minor role in Mr. Hankey's quests. The New Kid must rescue him from hobos, who are using him for an entertainment "Shit Show", and return him to his parents.
- "A Very Crappy Christmas" - First appearance. Briefly loses his Christmas spirit until Mr. Hankey sings to him "Circle of Poo".
- "I'm a Little Bit Country" - Seen in the crowd of people along with the rest of his family.
- Cornwallis sings with the voice of ex-Temptation Louis Price in "Circle of Poo", but with the high-pitched tones that Trey Parker gives to Mr Hankey when he sings "Santa Claus is On His Way" when on display to the hobos in the game.