Carnival Diablo the Ultimate Sideshow is a travelling sideshow operating primarily in Spencerville, Ontario, Canada. Performances by the troupe follow a traditional Ten-in-One format featuring such acts as fire-eating, sword swallowing and a human blockhead, with show times lasting two and a half hours. Carnival Diablo opened on April Fools' Day 1992 by Scott McClelland, whose family goes back three generations in the carnival and side show business. Shows have been performed across Canada, including shows at The Calgary Stampede, Edmonton's Klondike Days (now K-Days,) Regina's Buffalo Days, and the Canadian Tulip Festival. In 2008 and 2009, Carnival Diablo was featured act at Carnivàle Lune Bleue, a dedicated revival of a 1930s old-time carnival located in Ottawa, Ontario.