The Doktor had managed to brainwash both Rin and ZuZu, having them come to his control room

The Doktor: Now, my puppets. Repeat what I told you. He says as the two girls stand before him

Rin: We are proud duelists for Duel Academy! She says with an evil smirk

ZuZu: We will do anything that The Doktor commands of us! She adds with an evil smirk as well

Rin/ZuZu: We are yours to command! Who shall we duel?! They both proclaim as they stand at attention and salute to The Doktor