Kaito Tenjou in the manga and Japanese version, is the son of Dr. Faker, a Number Hunter, and one of the main characters who was gathering "Numbers" for his father in order to help his formerly sick brother, Haruto Tenjou, in Yu-Gi-Oh! ZEXAL. Assisted by a robot named Orbital 7, Kaito was the most direct adversary of the first three arcs, but his "Numbers" are now in the possession of Yuma Tsukumo and Astral.
An alternate universe version of Kaito is set to appear in Yu-Gi-Oh! ARC-V.