Starman

The Starman, also referred to as the Star, is an item that has consistently been in every Mario Kart game. It makes the user invincible and gives them a speed boost. Any racer that is hit will flip over and lose any items in their possession. It is one of five items that a Yoshi Egg or Birdo Egg may release, the other four being a Mushroom, Green Shell, Banana, and Bob-omb.