Rachel Elizabeth Dare is the seventeen-year-old daughter of Mr. and Mrs. Dare. She is the current Oracle of Delphi, and also described as one of Apollo's favorites.

Piper McLean and Annabeth found Rachel in Hera's Cabin, chanting a prayer or spell. She ran to Annabeth and gave her a hug, and said she had came as soon as she heard about Percy being missing. The two talked about Percy for a few minutes until Annabeth said she was being rude and introduced Rachel to Piper. Piper asked if she could see the future, and Rachel said that she could say prophecies that don't make sense, and not the future. Piper was weirded out and Rachel laughed, saying everyone found it creepy but insisted she was harmless. She explained she was in the cabin because she could sense there was a link between Percy's disappearance and Hera. When Annabeth talked about how she was redesigning Olympus, Rachel said she was great and that he could see the salad bar. Rachel and Annabeth both agreed something bad was happening. Suddenly, Rachel's body stiffened and began to glow. She grabbed Piper and spoke from Hera's voice, telling her to free her by the winter solstice.

A few days later, after the quest was over, Rachel gathered for a council meeting in the big house. Rachel was wearing her Clarion Ladies Academy uniform and smiled at Jason. She was the only one in the room not nervous about the conversation and said that Jason will help build the boat and then sail for Greece. She said that he would need the help of the Romans to defeat the giants, which Clarisse La Rue objected to. Rachel also said that there would be Romans in the prophecy of seven too to help, since Hera is convinced they would need both camps to defeat the giants.