Cato

Cato is a shape-shifting duelist who is allies with the moderator team along with many other people, as they are easy to talk to, and because of their passive charm. They are also the most willing to help anyone.

Their current identity mimics the female lewd mascot "Zone-tan's" appearance, with some differences to the original design, as their mimicking ability is never 100% accurate.

Introduction
Cato joined the crew fairly early along with Zaku-1 and has stayed with everyone ever since.

The Thunder Dragon King Arc
The crew has found server members either unconscious on the floor, or acting aggressive, mindlessly dueling other people.

While these people were being mind controlled by someone, if their opponents would lose to them, they would become mind controlled as well, acting like some sort of "virus".

Cato was invited by Kaiser to assist in finding the culprit behind the mind controls. Cato eventually found the source of the corruptions, and then Tinkomut used that and his moderator powers to link it to the Thunder Dragon King. After finding the King, Cato was hit by a shock wave along with Biff that turned them into the King's minions. Before Tinkomut and Kaiser were attacked by Cato and Biff, Kaiser used one of his Cyberdark monsters to knock them out.

After that, The King challenged Tinkomut and Kaiser to a 2 vs 1 dark game. In the middle of the duel, Cato woke up, and appeared to be no longer under the control of the King. The duel ended with Tinkomut and Kaiser successfully defeating the King. After Biff also woke up, the crew continued their journey to find the developers. While they were on the search, they found a cliff that lead to a rather large crater that contained Zaku, who was in pieces. Shocked at the sight, Cato rushed to check up on him. As Cato was looking at the head of Zaku, they recalled a a conversation Cato had with Zaku, and Cato pressed a button on the back of Zaku's head, which dispensed a memory card. Kaiser used his phone to scan the memory card, which provided a recorded footage from Zaku. The footage contained Zaku's last moments before his demise.