The Thunder Cloud (also known as a Lightning Cloud or TC, and originally known as Thundercloud) is an Item in the Mario Kart series that originated in Mario Kart Arcade GP, Mario Kart Arcade GP 2, Mario Kart Wii, and Mario Kart Arcade GP DX. It is similar in function to the Time Bomb, but it shrinks opponents rather than exploding. In Mario Kart Wii, unlike the other items, the Thunder Cloud activates as soon as it is obtained from an Item Box and cannot be thrown unlike its appearance in the ar