Character mistake: Bruce and Alfred play a short game of chess, after which Alfred remarks, "I don't know why we bother playing this game - you never lose." The problem is, Alfred moved into a position wherein Bruce could take his king; this is called "moving into check" and is not allowed in chess.
Beware the Batman (2013)
1 character mistake in season 1
Starring: Anthony Ruivivar, JB Blanc, Sumalee Montano
Continuity mistake: When Katana removes the armor off her, it lies in pieces around her feet on the ground. However, in a later shot, when she comes out wearing her eye mask and katana strapped to her back, the armor disappears altogether.