Since Superman was released in cinemas a couple of weeks ago, DC fans have been dying to know who is who in the mysterious mural that can be seen in Metropolis' Hall of Justice in the movie. Last week, James Gunn finally unveiled a first full look at the mural, which features 26 iconic superheroes from the comics.
Only a few days later, the DC boss and Superman director has praised fans' work identifying all the characters, and has revealed another mystery for them to rack their brains.
