Check out this cool infographic that shows the first appearance for every named criminal in Batman history.
This is another infographic coming from Halloween Costumes and it is supposed to contain all of Batman's villains that he has taken on through the years. There may be some missing, so hardcore Batman geeks start writing down anyone who's missing and let us know. The layout is somewhat weird as well, including the Joker bio in the 1950's area, even though he first appeared in the 1940's. If I would guess, it was an aesthetic decision to space out the bios. Or they may have just really messed up and didn't realize it. Either way, it's still pretty cool. Check it out below.