Biondello is one of Lucentio’s servants. He is shocked to see his master and Tranio exchange their clothing, but accepts to play along with their switch.
He is fascinated by Petruchio’s wild attire and manner on his wedding day, and rushes to tell Baptista of it. Tranio sets him to find an old man who will do for playing the part of Lucentio’s father, and he finally spots the pedant. He reports to Lucentio when Baptista is out of the way, and tells him of the marriage arrangements made for Lucentio and Bianca at Saint Luke’s church. He is taken aback when he sees the real Vincentio at Baptista’s door, and decides to continue playing the trick until Lucentio and Bianca are safely married, denying that he has ever seen Vincentio before. This earns him a beating. He is present at the great feast that ends the play, and unsuccessfully sent to fetch Bianca and the widow to their husbands.