Dueling Machine
A Dueling Machine or a Duel robot is a machine built to simulate duels without the need of a human opponent. They were built by KaibaCorp and were first shown in the Yu-Gi-Oh! anime. The two seen were the Duel Computer and later the KC DuelTek 760.
In Yu-Gi-Oh! 5D's, this type of Dueling robot is again seen as a Guard Robot and Duelbots. In the novel Cyber Kaiba could be considered a Duel machine. In Yu-Gi-Oh! ZEXAL, one appears in the form of the Heartland Tower Security Robot.