Dr. Faker is the primary antagonist of the first three arcs of Yu-Gi-Oh! ZEXAL and the father of Kaito Tenjou and Haruto Tenjou, and the founder of Heartland City itself. In the beginning he instructs Kaito 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 Haruto's illness.