Billy Buffalo
William "Billy" the Buffalo (debuted 2000 in Orchard Park, New York) is the official mascot of the NFL's Buffalo Bills. He is an blue American buffalo and became the team's full-time mascot in 2000. He wears uniform "number" BB. Billy Buffalo was redesigned in 2018, with fan reception to the mascot's "makeover" being mixed. Jason Ballock, who wore the costume from 2006 to 2011, praised the design as more streamlined and "kid friendly".