Reyna Ramírez-Arellano

Reyna is a Roman demigod.

The Lost Hero
When Jason's memory comes back to him, he remembers Reyna to be one of his friends. He says that he "definitely" remembers Reyna, indicating that he and Reyna might have had a relationship. He says her memory made him question what he felt about Piper, and wonder if he was doing something wrong. He recognizes this as a problem since he really likes Piper. It is assumed that she will be mentioned in The Son of Neptune.

Trivia

 * Her name Reyna means "Queen."