Dr. Faker is the primary antagonist of the first three arcs of Yu-Gi-Oh! ZEXAL and the father of Kite Tenjo and Hart Tenjo, and the founder of Heartland City itself. In the beginning he instructs Kite to collect the "Number" cards as it is believed that Faker wants to conquer Earth by destroying the Astral World. However his true ambition was to destroy the Astral World to fulfill his pact with Vector in order to cure Hart's illness. Faker is responsible for the mutation of Vetrix into a child, and for the disappearance of Kazuma Tsukumo. He is also able to see Astral.