Greg says: Mr. Duval is the head and founder of the Illuminati Society. He was once Sir Percival, a knight of the Round Table of King Arthur. He became immortal after Camelot's fall by drinking from the Holy Grail. In the 7th century, one hundred years after the fall of King Arthur's kingdom, the man who would be known as Mr. Duval founded the Illuminati. He remained the immortal leader of the organization to this day. In this episode he phoned David Xanatos, probably to inquire as to what he knew of Hunter's Moon incident.