Mr. Mover was one of the Duel Boards in Mario Party 3. One of this board's unique features was the conveyor belt at the bottom of the board, named Mr. Mover. Every turn, it would change colors from red to blue to red again. Mr. Mover would take players to the right side of the board if it was red, and to the left side if it was blue. Players would have to time their turns carefully if they wanted to go back to their respective start space.
In Story Mode, the player had to duel Mario (or Luigi) on this board for the Courage Star Stamp.