10 Batman Plot-Holes Everyone Just Accepts
10. The Number Of Batmen Referred To By Future Batman - DC One Million #3
DC One Million is a book written by Grant Morrison that takes a look at the Justice League of America of the 853rd century. In it, the Batman of the future refers to Two-Face-Two, a version of Two Face that appears in the Batman-666 future (the one that sees Damian Wayne become Batman because he sold his soul to the devil).
That's all fine, but when the 853rd century refers to Batman-666, he states that Damian is the second Batman. Which is wrong because Damian was the third Batman, after Bruce and Dick.
To be fair to Morrison, he did write DC One Million a whole twelve years prior to when he wrote the story that introduced Batman-666, so perhaps this plot-hole is one more deserving of praise than criticism, because that shows a heckuva vision.