Philario is Posthumus’ host in Rome and a friend of Posthumus’ family, since he was a soldier with Posthumus’ father, Sicilius Leonatus. Philario tries to make Posthumus feel welcome in his new home in exile, and doesn’t expect any payment in return. He introduces Posthumus to his friend Iachimo, which turns disastrous when Iachimo goads Posthumus into making a wager over Imogen’s chastity. While being friends with Iachimo doesn’t reflect well on Philario, Philario does consistently discourage the bet, encouraging Posthumus to trust Imogen.