The Expos introduced their first mascot during the 1978 season. Called "Souki", the mascot resembled Mr. Met with a futuristic looking uniform but was met with such a negative reaction that the team immediately retired it after one season; Souki was once attacked by a father of children frightened by it. Seeking a replacement, the Expos found a design for a mascot similar to the Phillie Phanatic in the inventory of an American mascot company that had gone bankrupt. The mascot was designed by Bonnie Erickson, who created the Phanatic as well as several Muppets characters, including Miss Piggy. The team named the new mascot "Youppi!", which is French for "Yippee!" Unlike Souki, Youppi! was immediately popular with fans upon its introduction in 1979, particularly children, and the mascot became a fixture at children's hospitals during its 25 years as the Expos mascot.