: Percy's mentor and the trainer of heroes at Camp Half-Blood, disguised as his Latin teacher, Mr. Brunner. Major Themes The Lightning Thief: Full Book Summary | SparkNotes
: A counselor at Camp Half-Blood who initially mentors Percy but is later revealed as the true lightning thief working for Kronos. Percy Jackson & The Olympians: The Lightning Thief
: A brilliant strategist and daughter of Athena who provides the wisdom and skill needed for the quest. : Percy's mentor and the trainer of heroes