List of characters in the Camp Half-Blood series
Ariadne - Ariadne once helped Theseus when it came to him slaying the Minotaur. When Theseus unknowingly left Ariadne on an island, she was found by Dionysus who took her on as his wife. Theseus "abandoning" Ariadne was one of the reasons why Dionysus dislikes heroes. Ariadne made an appearance at the end of "The Titan's Curse" where she was walking arm to arm with Dionysus.