Mirror, Mirror on the Wall
When you think about archenemies, Batman and the Joker are sure to pop up. Strangely, the two are like yin and yang, one is incomplete without the other. So, if you missed Batman in Joaquin Phoenix’s Joker from 2019, turns out the Caped Crusader actually makes a brief appearance. During the opening scene, we catch Arthur Fleck (Phoenix) sitting in front of a mirror applying makeup for a clown gig.
If you look closely, the lighting and framework make it seem like Batman is in the mirror. It may sound like a stretch but those lights certainly look like Batman’s glowing white eyes and the shadows form the rest of the cowl.