MC Ballyhoo is a major character from Mario Party 8, in which hosts the various game modes as the self-proclaimed, "master of catastrophes." He is creator of Star Festival, and appears as a trophy in Super Smash Bros Brawl, which he shares with Big Top.
Super Smash Bros Brawl Trophy
The two emcees of the Star Carnival, an event held once a year to determine the biggest superstar. Big Top (on top) and Ballyhoo (on bottom) provide all Star Carnival commentary, and while Ballyhoo is energetic and over the top, Big Top provides a reserved counterpoint to his partner's antics. Despite their conflicting personalities, they're inseparable.