The Koopa Clown Car, sometimes called Koopa Copter, is a flying vehicle. In Japanese, it is simply referred to as "Koopa Clown" (クッパクラウン).
It debuted in Super Mario World where it was used by Bowser. The Koopa Clown Car (sometimes called the Koopa Clown Copter, Koopa Copter, or simply Flying Carriage) is Bowser's favored mode of transportation. Despite being called a car, it is a helicopter-like vehicle with a large clown face on the front, which has the ability to change its expression.
