Harrison/Erickson, Inc. designed a number of professional sports mascots, including Youppi, Big Shot, Duncan, KC Wolf, and Slyly, among others. The managers of the Philadelphia Phillies Major League Baseball team commissioned Harrison/Erickson, Inc. to design a mascot who could encourage fans to bring their families to the games. Philly Phanatic proved child-friendly, playful, and a little irreverent, but not too silly.