Duel Masters Charge: The Last Duel

The Last Duel is the 5th episode in the Duel Masters Charge season of the Duel Masters Anime.

Plot
Mimi and Boy George have already made there way out and are waiting for the finals. Now the only duellist left in th equalifiers are Shobu, Hakuoh, Robby Rotten, and Ishiguro. Hakuoh is now facing Ishiguro and he had almost cornered Hakuoh but still in end Hakuoh won and Ishiguro was still happy because he got his chance to duel him. On the otherhand Shobu who have just met his first duellist Robby but he wanted to meet Hakuoh instead. He was really angry to look and Shobu but when Shobu mentioned that he have already defeated Hakuoh Robby said OK then i will defeat you then and claim that i have beaten the champion who defeated hakuoh. Still in the end he Robby lost. and Shobu made his way to the finals. Now when Robby fell through the whole after his loss he was held by giant robot who told him to tell everythng about Shobu's deck. Who could this be??