a mascot used in advertisements for Hamm's Brewery, an early sponsor for the Twins. The "T. C." stands for the "Twin Cities", Minneapolis and St. Paul. Prior to T.C., the mascot for the Minnesota Twins 1980–81 was a loon named "Twinkie". T.C. can be seen wearing the team home main or alternate uniform with the TC mark on his cap, just like the rest of the team. Wally the Green Monster and Tessie (Boston Red Sox) Wally the Green Monster is the official mascot for the Boston Red Sox. His name is derived from the Green Monster nickname of the wall in left field at Fenway Park. Wally debuted in 1997 to the chagrin of many older Red Sox fans, despite his popularity with children. According to the Red Sox promotions department, Wally was a huge Red Sox fan who, in 1947, decided to move inside the left field wall of Fenway Park, since it "eats up" hits that would easily be home runs at other parks. Apparently, he was very shy and lived the life of a hermit for 50 years. In 1997, on the 50th anniversary of the Green Monster being painted green, he came out of the manual scoreboard and has been interacting with players and fans ever since. When the team began to grow out their beards as a trademark during their 2013 World Series run, Wally was given a long beard as well. In January 2016, the Red Sox unveiled a new mascot named Tessie, Wally the Green Monster's little sister. Tessie is named after the song "Tessie", which has long been associated with the Red Sox. Tessie wears a blue shirt with the large letter B in red - the symbol utilized in the team's caps, which they both wear. Former mascots This is a list of former Major League Baseball mascots. Some of these mascots may still be used, but are not considered "official" mascots. Astrojack and Astrodillo Astrojack, an anthropomorphic rabbit, and Astrodillo, an anthropomorphic armadillo, were mascots for the Houston Astros in the 1980s. They wore the Astros' "rainbow" uniforms of that time, and were also the team's first mascots to circulate through the crowd. Before games and during breaks between innings, they would also race around the field on three-wheelers and perform skits with the Astrodome's house band, The Astronuts. The creator of Astrojack and Astrodillo, Logan Goodson, would go