Rigatoni is a hitman who specializes in assassinating Stand users, and as such very few in the entire organization know of his existence. He is feared and known as the "Stand Killer" but was once partnered with Guido Mista due to being unable to work with a Stand-less partner. Prior to the events of the novel, Rigatoni had retired. However, he took up a request this time in order to have a showdown with Mista.
He dies at the top of the bell tower of St Mark's Basilica, defeated by a Stand combination between Mista and Giorno Giovanna.