According to the Red Sox, Wally the Green Monster has long been a resident of Fenway Park, residing in the Green Monster wall since 1947. Wally has seen many legendary outfielders (and even a few National Baseball Hall of Famers) play left field and master the infamous "Green Monster" at Fenway. In 1997, Wally emerged from the wall to everyone's surprise on Opening Day. After 15 years, Wally has become a family favorite and entertains the crowds of fans who come to Fenway to see the Red Sox play. He wears Red Sox jersey #97, indicating the year of his emergence from the wall, and his trusty team-issued size 37 ballcap is never far from his green head.