|“||Tiberinus is ever so helpful. He saved my children Romulus and Remus, you know, and brought them to the wolf goddess Lupa. Later, when that old king Numen tried to kill me, Tiberinus took pity on me and made me his wife. I’ve been ruling the river kingdom at his side ever since. He’s just dreamy!||”|
–Rhea Silvia, on Tiberinus.
He helped Aeneas in his travel from Troy, suggesting to him that he land in Latium and gave him much other precious advice.
Tiberinus was also known as the river god who found the twins Romulus and Remus and gave them to the she-wolf Lupa. He later rescued and married Rhea Silvia, the mother of the twins and a Vestal Virgin who had been sentenced to death.
In the Series
Years later, Tiberinus and his wife Rhea Silvia assisted many children of Athena on their quest for the Athena Parthenos. He regretted that most of them had a painful death later on.
Tiberinus and his wife Rhea Silvia helped Annabeth Chase, the "child of Wisdom", on her quest to recover the Athena Parthenos in Rome, Italy. He was mistaken for and repeatedly compared to Gregory Peck. He claimed that his appearance is because of the movement of Western Civilization. He explained that while the gods moved from place to place and affected the world, the world also affected Rome, causing the gods in Rome to change along with the way the world saw Rome. He continued to drive Annabeth around Rome until dropping her off at an entrance to the Roman underground.
|“||Do you two always look like American movie stars?||”|
Tiberinus was compared to Gregory Peck, a popular American actor most well known for the role of Atticus Finch in the 1960 film To Kill a Mockingbird, who rode a Vespa. Percy Jackson remarked that he was handsome in a "1950s dad-on-television way." When he met Annabeth and Percy, he was wearing a silky gray suit, but the waistline of his slacks was higher than normal and yet he managed to look manly and stylish at the same time. His hair was short and greased back from his "craggy face" although he seemed around his mid-thirties.
Initially, Percy confused Tiberinus with an actor from the television series Mad Men.