He is first named in The Castafiore Emerald interviewing Bianca Castafiore and takes pictures of her and Captain Haddock. He and Willoughby-Drupe then publish a false rumour article in the Paris-Flash claiming that Castafiore and Haddock are engaged. He is later seen in Tintin and the Picaros, interviewing Captain Haddock about Castafiore's imprisonment in San Theodoros by order of General Tapioca.
At the end of The Black Island Rizotto is amongst the large crowd of reporters welcoming Tintin at the docks in Kiltoch. He also has a cameo photographing Tintin and Bunji Kuraki at the end of The Crab with the Golden Claws television episode. The name Rizotto sounds like risotto, the name of an Italian rice dish.