Claudio Monteverdi | Claudio Roditi | Claudio Arrau | Claudio Reyna | Cláudio Taffarel | Claudio Scimone | Claudio Procesi | Claudio Baglioni | Claudio Lolli | Claudio Cecchetto | Claudio Magris | Claudio Naranjo | Sergio Claudio dos Santos | Claudio Marrero | Claudio Marchisio | Claudio Chiappucci | Claudio Bravo | Claudio Bisio | Claudio Vargas | Claudio Treves | Claudio Taffarel | Claudio Stampi | Claudio Scarchilli | Claudio Scajola | Claudio Saracini | Claudio Sanchez | Claudio R. M. Costa | Claudio Ranieri | Claudio Prieto | Claudio Osorio |
In 1981 he created with scriptwriter Claudio Nizzi the series Rosco & Sonny, using himself as a model for Sonny's features.
In 1969 he started a collaboration with the children magazine Il Giornalino, for which Landolfi, in addition to having made several comic adaptations from literary such as Gulliver's Travels and Father Brown, co-created with writer Claudio Nizzi the popular "Piccolo Dente", leading character of a long lasting eponym comic strip.
From 1972 he also he collaborates with Il Giornalino, for which he produced Il Campione (a series set in the boxing world, written by Alberto Ongaro) and the police series Tenente Marlo, with stories by Claudio Nizzi.