10 Unnecessary Movie Details You Need To Know

10. Batman's Face Is Visible In The Mirror (Or Is It?) - Joker

Todd Phillips' Joker may be less a superhero movie than a dramatic thriller that happens to take place in the world of DC Comics, but that doesn't mean it's above including some visual Easter eggs nodding to the wider franchise.

Batman doesn't physically appear in the film at all, but there nevertheless seems to be a devilishly clever reference to the Dark Knight in the film's very first shot.

As the camera dollies forward towards Arthur (Joaquin Phoenix) sat in front of a mirror, there's a point at which the mirror creates a recognisable visage of Batman's iconic cowl.

Two lights in the mirror are the distinctive white eye slits in Batman's mask, while a pillow hanging at the top of the mirror creates a split for the mask's distinctive ears.

Fans have debated whether this was an intentional Easter egg or not ever since the movie's release, though the fact that it's become a viral sensation ultimately makes Phillips' intent - or not - beside the point.

Given the Joker's obsession with Batman, and the common inference in DC comics that the two rivals are mirror images of each other, it's a fitting visual all the same.