Professor Alfredo Topolino is a Swiss expert in the field of ultrasonics who resides in Nyon, Switzerland, appearing in The Calculus Affair.
History
An old acquaintance of Professor Calculus, he survives first an assault on his doorstep then the destruction of his house by Bordurian agents interested in Calculus's work. His assistant Boris covertly works for the Bordurian secret service, the ZEP. He tied Topolino up in his own basement and rigged a bomb to blow but he was saved by Tintin and Captain Haddock.