Alessandro Manzoni | Alessandro Volta | Valentino Rossi | Alessandro Scarlatti | Vasco Rossi | Ernesto Rossi | Alessandro Farnese | Portia de Rossi | Alessandro Mendini | Alessandro Ballan | Aldo Rossi | De Rossi | Alessandro Safina | Alessandro Del Piero | Alessandro Cagliostro | Salamone Rossi | Giovanni Battista de Rossi | Alessandro Baricco | Alessandro | Ugo Rossi | Rossi | Martini & Rossi | Gino Rossi | Ernesto Rossi (politician) | Dino Rossi | Alessandro Ripellino | Alessandro Magnasco | Alessandro Gherardini | Alessandro Barsanti | Sergio Rossi |
Giampaolo Morelli (Coliandro), Alessandro Rossi (commissioner De Zan), Veronica Logan (prosecutor Longhi), and Giuseppe Soleri (agent Gargiulo, Coliandro's partner) reprised their roles in the second season; the rest of the cast was rotated.