Borio is a fanon infamous third mario brother. He wears a blue cap and green overalls, as seen to the right.

Borio's only appearance in a mario kart game is Mario Kart Super Raceway as an unlockable Character by getting a star in every mirror mode cups, get a 325 star rank or just buying him in the shop.

Though fanon, he is not similar to another fanon third bro from Fantendo, Gasparo.