Carrot

A Carrot is an item that appears in Super Mario Land 2: 6 Golden Coins. It transforms Mario into Bunny Mario, but Wario also uses it to transform into.

A carrot has first appeared in volume 6 of Super Mario-Kun. Unlike most items, this carrot talks and plays a bigger role.

Carrots also make a brief appearance in Mario Kirby Meisaku Video. After Mario crashes his Kart during his pursuit of the mysterious thief W, who was trying to escape in his Plane, the Bulldog, Mario finds a garden full of Carrots, eats one, and transforms into Bunny Mario.

Carrots also appear in Super Mario Advance (although not in the original Super Mario Bros. 2 and other remakes of said game) as platforms that would bounce up out of hills and help Mario and company reach higher lands. They only appeared in two levels, though.

Carrots later appear in Mario Kart Arcade GP 2 as items. However, these carrots have bunny ears atop them.

A giant carrot known as the Giga Carrot appeared in Mario & Luigi: Bowser's Inside Story. It is a very old carrot that has been under the care of the Wiggler Family for generations. In the game, a member of the Wiggler Family forced Bowser to eat this carrot after he plucked it from the ground within a minute.

Trivia

 * In a preview for Super Mario Land 2: 6 Golden Coins, the gliding power-up was described as a "Cap" rather than the Carrot, and the screenshot was blacked out. It is possible that the design was decided later in development.