Bowser Sphinx
The Bowser Sphinx is the villain of Mystery Land in Mario Party 2. He can be recognized by being a Bowser wearing an Egyptian-style collar. At the end, the Bowser Sphinx will challenge a Koopa Troopa to a game of riddles in order to win the aliens' gold statue, (the aliens are actually Bob-ombs). The Koopa fails and is put into a rock. The winner of the game then challenges the Bowser Sphinx to another game of riddles. The player guesses correctly, the Bowser Sphinx disappears and the aliens take their gold statue away on their spaceship.
It also appears in Mario Party 7 in Pyramid Park, But it was a Sphinx, not Bowser. When the player lands on it's ? Space, it will either cut Chain Chomps's costs in half or split all players' coins equally. Also, if the player plays Pyramid Park in Cruise Mode, a Bandit will steal Bowser Sphinx's Star.