Chuck Quizmo
Chuck Quizmo is a Quizmaster in Paper Mario. Chuck appears (along with assistant Vanna T.) in several towns throughout the game. When Mario talks to him, they are both transported to a stage where Chuck will ask Mario a question. If Mario answers correctly, he will receive a Star Piece, if he fails to answer correctly he gets nothing.
He appears near the left fence in Goomba Village, near Koopa Koot's house, near Merlon's house, second area of Dry Dry Outpost, Shiver City, Yoshi's Village, and, very rarely, Star Haven. He asks 64 questions total.
In Toad Town Tunnels, three blue warp pipes are arranged in a row to Koopa Village, Goomba Village, and Dry Dry Outpost. Go back and forth between these to find him easily. However, repeatedly entering the pipes may not always work.
A character that is nearly identical with Chuck will appear in Mario Party 8. His name is MC Ballyhoo.