The Batman: 15 Details You Missed The First Time
4. The Riddler's Other Alias
Later in the movie the Riddler is finally captured by the police at a diner, and upon searching him the cops find that he's got two different IDs about his person.
Though it's made clear that the Riddler's apparently real name in the movie is Edward Nashton, for a brief second we catch a flash of that second ID, which bears the name "Patrick Parker."
This wasn't just a random name made up for the film - the Riddler has actually used this alias in the comics before, and so it was in fact a deep cut reference for those who know their source material.