Robo Mimi was introduced in the Duel Masters Charge season of the Duel Masters anime.
Plot[]
It is created by Dr. Root. Its behavior, dueling skills, deck and appearance all match Mimi. Dr. Root first tested this robot's first model Robo Shobu on a beach against other duelists and it was perfectly successful. Then Dr. Root built similar other robots as well who matches Shobu's best friends.
After Mimi, Shobu, Hakuoh and George got back there finals passes for the Duel Masters Battle Arena. Dr. Root told them that have been working very hard on training all the time and that they all can come to the beach and relax. But when they all lined up outside they were all dropped down underground and they all faced these robots.
This Robot dueled against Mimi, with the same deck as Mimi uses and a very irritating mode of old Mimi as well. Mimi herself ended up with Boy George's deck. The first time she dueled she lost against it. And the second time she was in trouble with understanding Boy George's deck tactics. And finally she got so angry that she punched a wall and made a hole in it from which water started to flow out. She started to cool her head up for the moment in that water and then she continued the duel. In the end the robot lost against Mimi.
Deck[]
It used an deck consisting of all the 5 civilizations and based on 
Shield Triggers.