Bowser's Battle Yacht

Even when Wario has zero Stars and Coins, Bowser will still penalize him with a Shadow Star in Castaway Bay.
Bowser's Battle Yacht in Mario Party 6
“Watch out! If you stop on Bowser's Battle Yacht, you’ll lose a Star or coins!”
Brighton, Mario Party 6

Bowser's Battle Yacht is a vehicle in Mario Party 6. Bowser rides it around Castaway Bay. If a player character lands on it, Bowser gives the character a Shadow Star, forcing them to lose a Star or coins (even if they have zero Stars and coins). After forcibly giving a player a Shadow Star, he shoots them out of the yacht's cannon onto the Start Space. Landing on a ? Space makes Bowser's Battle Yacht exchange locations with DK's Riverboat. If a player takes the raft ride in the northern part of the board while Bowser's Battle Yacht is facing it and DK's Riverboat is attainable, Bowser fires three cannonballs at the player. If the player gets hit, they lose five coins and end their ride near the end of the board, and their turn immediately ends.