The Burning Maze horse is Incitatus, and its owner is the third emperor, Caligula. They return to Aeithales and convey the news to the spirits. Grover tells Apollo about a part of the Labyrinth that is burning, causing droughts and water shortage in the upper world. Hedge and Mellie reveal that Piper McLean and Jason Grace had explored the Labyrinth. Apollo decided to meet with them. Meg plants the seeds with which her father had planned to reincarnate the Meliai. Apollo, Meg and Grover meet Piper and bring Jason, who had broken up with Piper, from his school the following day. Jason confidentially
Frederick I, Holy Roman Emperor Frederick I, Holy Roman Emperor Frederick I (, ; 1122 – 10 June 1190), also known as Frederick Barbarossa (), was the Holy Roman Emperor from 2 January 1155 until his death. He was elected King of Germany at Frankfurt on 4 March 1152 and crowned in Aachen on 9 March 1152. He was crowned King of Italy on 24 April 1155 in Pavia and Roman Emperor by Pope Adrian IV on 18 June 1155 in Rome. Two years later, the term ' ("holy") first appeared in a document in connection with his Empire. He was later formally crowned King