Trivia

During the Batman versus Superman fight, in one of the walls in the foreground you can see spray painted the Latin rhetorical question "Quis custodiet ipsos custodes?" The exact literal translation of this is "Who will guard the guards themselves?" Which is a prominent theme in the film. Also in Justice League Unlimited: Divided We Fall (2005), Batman makes this question in Latin to Green Arrow to which he gives a paraphrased reply "Who guards the guardians? We got it covered". It is also a major theme and repeated quote - "Who watches the watchmen?" - throughout Watchmen (2009), which Zack Snyder also directed. See more