Toad

Toad is a playable character in Mario Kart Super Circuit. Toad debuted in Super Mario Kart and all later Mario Kart games and he is the attendant of Peach.

Mario Kart Super Circuit
Along with Peach, both have good acceleration and handling but lack weight, meaning they can get bumped easily, especially by a heavyweight but unlike Peach, Toad has a speed of 1.

Trivia

 * He is one of the racers to appear in every Mario Kart game, he shares this with Mario, Luigi, Bowser, Peach and Yoshi