Millennium Star

The Millenium Star is a silver, mustachioed star who will grant the wish of any player who passes his test in Mario Party 3. The Millenium Star fell on Peach's Garden while Mario and his friends were resting. Mario and his friends argued about who got the star, and then Lakitu came and told them to do a Mario Party to see who got the star.

Something Happened...
In the end of the game, Tumble is revealed to be the true Millenium Star, and the one the players have been trying to please is a fake.

Oddly Tumble reappears in Mario Party Advance, it is unknown if this Tumble is the same as the one in Mario Party 3 (and thus also the Millenium Star) or if it is a different one.