Vector is a character in the Yu-Gi-Oh! ZEXAL series and one of the central antagonists of the show. He is a Barian from the Barian World who manipulated Dr. Faker and Vetrix to achieve the Barians' goal of destroying the Astral World. After being defeated by Yuma Tsukumo, he set up a new plan by taking on a human form and befriend Yuma (under the name Rei Shingetsu) in order to plan his downfall. He also happened to turn into a giant snake with dragon wings when he gets furious.