The Prince of Canada is a character in South Park: The Stick of Truth. Obviously, by his name, he is the prince of Canada.
The Prince is introduced alongside the Princess of Canada and he sends the New Kid to see the Earl of Winnipeg to get the documents translated. The Earl sends him back to the Prince to ask him to release the Minister of Montreal, who is the only one who can translate the document.
The Prince then sends the New Kid to kill the Bishop of Banff and bring back his balls as a trophy (he can be spared and the Price is oblivious to the Dire Pig balls in place of the Bishop's real balls) and he refuses to help anyway. The Princess helps behind his back and sends him to the Duke of Vancouver.
The Prince and Princess friend the New Kid on Facebook and after this, he has no further role in the storyline.