A fan survey completed by The Marketing Arm's Davie Brown Index, which measures people's perceptions of celebrities and their influence on brands, says that Mr. Met is America's favorite mascot. The live character debuted in 1964, the year the Mets moved into Shea Stadium. Here are the top five mascots, according to the study: 1. Mr. Met, New York Mets 2. Phillie Phanatic, Philadelphia Phillies 3. Benny the Bull, Chicago Bulls 4. San Diego Chicken, Freelance 5. Wally the Green Monster, Boston Red Sox