In the recently released trailer for Joker starring Joaquin Phoenix, we see Arthur Fleck from his pre-Joker Times scribbling some “jokes” in his book. During the scene (photo below), he’s writing with his left hand.
As far I remember, Phoenix isn’t a left handed actor (because I couldn’t find him on this list of left handed actors here), so that got me thinking.
Is the Joker actually left handed? Looking for evidences from comics, animated series or movies.