Half-Blood. Iris/Arcus – The goddess of rainbows, who administers a network of rainbows used by demigods and Olympians to communicate remotely. She is the mother of the demigod Butch, who makes a small appearance in The Lost Hero, who was the company of Annabeth in finding "the boy with one shoe" which was Jason Grace. After the Second Titanomachy, she is granted Cabin 14 for her demigod children. In The Son of Neptune, she meets Frank, Percy, and Hazel on their quest in finding the missing legion's eagle. She is also mentioned to be an old friend of Chiron's in The Sea of Monsters and allows him to listen in on Percy and his friends communications, enabling Chiron to rescue them from trouble just in the nick of time. Janus – The god of gates, doorways, beginnings, and endings; he appears as a minor character in The Battle of the Labyrinth. He has two faces, and each face seems to think the exact opposite of what the other face thinks. After harassing Annabeth Chase, he is sent away by Hera. In Percy's dreams, he learns that Janus had influenced Daedalus to allow his nephew Perdix to die. Kymopoleia – The goddess of sea storms and daughter of Poseidon. She is bethrothed to Briares the Hekatonkheire, whom she resents. In The Blood of Olympus, Kymopoleia works with Polybotes to hinder the demigods while sailing through the Aegean Sea after feeling abandoned by her father. She is convinced by Jason to switch sides, because she wants to be feared and respected. Together, they kill Polybotes. She is nicknamed "Kym" by Percy who attempts to get her to give her husband a second chance, Percy having previously met and befriended Briares. Lares – Household gods and ancestor spirits who are guardians at Camp Jupiter. Cato – A Lare. In The Son of Neptune, Cato is seen at the senate meeting where Frank Zhang is made a Centurion. Vitellius – A Lar who is a descendant of Asclepius. In The Son of Neptune, he was first seen when Hazel was introducing Percy to him. Morpheus/Somnia – The god of dreams and son of Hypnos. He is among the minor gods that appears as an ally of Kronos in The Last Olympian. He puts the entire city of New York to sleep during the battle. Melinoë – The goddess of ghosts, who lives in the