1920 1953 1984 2005 2006 2019 Cougar Team Naming All teams are named the “Cougars”, a name that was first introduced by Eugene L. Roberts in the 1920s, initially only applied to the football team. See Full Story First BYU Mascot Creation The athletics mascot, Cosmo the Cougar, was created by Dwayne Stevenson, and made his first appearance before BYU fans on October …