The Zuchinni Brothers are best known for their Human Cannon Ball act. This act is mostly performed by three Zuchinni brothers and one cannon, although the Wally Boag episode features six brothers and five cannons.
Some of the Zuchinni Brothers' names are Biondo (episode 412), Marco, Giuseppi, Luigi, Lorenzo, and Heathcliff (the "Mama's Boy" of the group).
The Zuchinni Brother puppets are Whatnots; they tend to look a little differently in each episode, although their design remains basically the same.
The name is a parody of the Zacchini Brothers, one of the world's earliest and most famous human cannonball acts.