Fun Fact About Killing Joke

Apparently Killing Joke, as in the band, owned the rights to that name, and so DC had to cut a deal with them to be able to use it. Not for money. Killing Joke (band) were allowed to use Batman on two of their album covers...
See? Sometimes facts really can be fun!
DC's bizarre deal with an '80s metal band to make Alan Moore's Batman: The Killing Joke | Blastr