Ernesto and Luigi Gambonno, also known as the Great Gambonnos, are two supervillains from Marvel comics.
The Great Gambonnos were twin brothers who worked as acrobats and aerialists in Ringmaster's Circus of Crime. It is unknown why the Italian aerialists the Great Gambonnos joined the Circus of Crime, but they have been long standing members seemingly only missing their first appearance against the Hulk. They consider themselves to be the "Kings of the Trapeze", and they effectively use their acrobatic skills in tandem to cause confusion, but they were unable to best either Spider-Man or Daredevil.
The identical twins joined the Clown, Princess Python, and the Human Cannonball in the Masters of Menace, wanting to break from the Ringmaster and hoping for better success. However, when Spider-Man stopped their criminal endeavors, they returned to the Ringmaster and the Circus of Crime.