Ztar



Shadow Stars (previously known as Ztars) are black counterparts to stars found exclusively within the Mario Party series. Instead of granting the player a star, it takes away one in the player's possession. In Mario Party, the Shadow Star, back then known as Ztar, is the Bowser Bogus item for Mario's Rainbow Castle. Along with losing a star, the player will also lose 40 coins. Mario Party 4 features a Ztar hosting the volleyball game in Thwomp's Backroom Ball.

Ztars were renamed as Shadow Stars during the events of Mario Party 6. In Clockwork Castle, if Bowser encounters a player, he will give the player a Shadow Star if the player has one or more stars. This will cause the player to lose all of his or her stars and if there are no stars present, Bowser will take away all of the player's coins instead. Shadow Star also make a minor cameo in the comparison quiz section of Speak Up. During the events of Mario Party DS, Shadow Stars occasionally appear in Hidden Blocks. If a player is unfortunate enough to get one, he or she will lose a star.

Trivia

 * A black star also appears in Super Mario RPG: Legend of the Seven Stars when the special attack Dark Star is used.