Sticker King

"You must be the new kid. I'm the Sticker King! Around here, I'm the best at all the games on the playground." He is a character in both versions of the game. His real name is Connor as revealed in the DS version of the game. He is a kid who hosts The Gauntlet (or The Challenge in the DS version). He also gives you Super Stickers which are power-ups for the sports in the game.