The Batman (2004)
0 character mistakes in season 5
Starring: Alastair Duncan, Rino Romano, Evan Sabara
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Character mistake: In s01e08, "Q and A", Yelena moves her bishop to B6. The announcer says that's going to win it (the game gets interrupted at this point). However, that move does not put the computer (her opponent) into checkmate, it doesn't even put it into check. Her bishop is on a dark square and the computer's king is on a white square.
The Penguin: Please, now that all pretenses are off, call me Penguin - a flightless bird, but one with style.