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The Koopa Clown is an unlockable kart part in Mario Kart 7, based upon Bowser's Koopa Clown Car. It boosts handling, but lowers acceleration and off-road slightly. It should also been noted that the Koopa Clown is tied with the Birthday Girl and Cloud 9 for having the highest handling of all kart bodies, and it has the highest handling of any kart body that doesn't have a negative impact on the speed stat.
In terms of its hidden stats, the Koopa Clown offers one of the strongest mini-turbo boosts in the game; a trait that it shares with the Barrel Train and Bumble V kart bodies. Its engine noise is similar to that of Tyrant and Hurricane from Mario Kart DS.
The kart reappears in Mario Kart 8 Deluxe and is redesigned to appear smaller, which looks more like a Junior Clown Car. The exhaust pipes are shorter and it is equipped a pair of propellers that open up in anti-gravity mode. Much like the Landship, the kart has different pallet colors for the Koopalings, which match the colors of the Koopa Clown Cars they used in Super Smash Bros. for Nintendo 3DS / Wii U. For other characters, it uses the default green color. Its engine sound is shared with the Biddybuggy.