In The SeriesEdit
Rhea is seen in The Mark of Athena with Tibernius. They have both been helping the children of Athena with their quest for the past few hundred years.
They are mistaken as American actors, Gregory Peck and Audrey Hepburn- from the tv show Roman Holiday.
They were seen "waltzing" down the lane as Annabeth and Percy were touring Greece. There they directed Annabeth to the starting point of the Mark of Athena.