The Duel Robot known as the Duel Robo (デュエルロボ Dyueru Robo) in the in the Japanese version, is a computer used by Seto Kaiba to practice dueling against. It appears in the anime when Kaiba tests his new Duel Disks and "Obelisk the Tormentor". Giving the robot his old Deck, he defeats it using "Obelisk". Due to the excessive power of "Obelisk", the robot overloaded and exploded.