The Phillies Phanatic is arguably the best mascot in all of American sports and easily one of the best in baseball. Other teams certainly recognize that, and at least one is trying to find their own Phanatic.
The Atlanta Braves unveiled their new mascot Saturday at ChopFest, essentially the pre-spring training hype party for the team. They had to replace Homer, the second incarnation of Mr. Met. It appears they like finding inspiration in other NL East teams:
New @Braves Mascot Blooper getting formally introduced at #ChopFest #Braves pic.