From the Super Mario Wiki
Hort is a person in the Flipside Arcade in the game Super Paper Mario. Tippi says he is the "iron man of games" and plays games like a professional. This is corroberated by the fact that has high scores of 700,000 and 500,000 in every game at the Flipside Arcade. Tippi also says he is the master of games, but not the master of games of love, which may indicate that he's in a relationship with Kerrie, who sings that her boyfriend's true love is the arcade.