Youppi! (Yippee! or Hooray! in French) is the official mascot for the Montreal Canadiens. The exclamation mark is part of the trademarked name. From 1979 to 2004, Youppi! was the mascot of the Montreal Expos baseball team. When the Expos left Montreal, Youppi! was adopted by the hockey franchise, becoming the first league-switching mascot in major league sports history. Instead of endorsing a number in the back of his jersey, he wears an exclamation mark. Prior to Youppi!, the Canadiens had no official mascot.