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 second series anime. The two seen were the Duel Computer and later the KC DuelTek 760. Their names suggest that the 1000 model is more advanced then the 760 model in spite of it being introduced first.
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.