The First Senator is an old man, one of the members of government who refuses to help Timon when he is in need.
He also offers windy reasons for applying laws strictly without mitigation, without considering greater concerns. His ill-considered exiling of Alcibiades puts all of Athens in danger. Due to this he is forced to plead with Timon for help against Alcibiades when the panic-struck Athenians want Timon as a dictator to save them from the rebels. He is unsuccessful. In the end he surrenders to Alcibiades to save the city.